<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-4085</journal-id>
<journal-title><![CDATA[Revista mexicana de urología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. urol.]]></abbrev-journal-title>
<issn>2007-4085</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Urología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-40852017000400279</article-id>
<article-id pub-id-type="doi">10.24245/revmexurol.v77i4.1342</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Comparison of the most popular methods for predicting stone-free rate after percutaneous nephrolithotomy]]></article-title>
<article-title xml:lang="es"><![CDATA[Comparación de los métodos más populares para predecir la tasa libre de litiasis posterior a nefrolitotomía percutánea]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ugalde-Resano]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villeda-Sandoval]]></surname>
<given-names><![CDATA[CI.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kobashi-Sandoval]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Ramírez]]></surname>
<given-names><![CDATA[JA.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-Robles]]></surname>
<given-names><![CDATA[MA.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Méndez-Probst]]></surname>
<given-names><![CDATA[CE.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Urology Department ]]></institution>
<addr-line><![CDATA[Mexico city ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<volume>77</volume>
<numero>4</numero>
<fpage>279</fpage>
<lpage>288</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40852017000400279&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40852017000400279&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40852017000400279&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  BACKGROUND:  The Guy&#8217;s stone score, S.T.O.N.E. nephrolithometry, CROES nomogram, and S-ReSC scoring system have recently been externally validated as effective predictors of stone-free rate after percutaneous nephrolithotomy.  OBJECTIVE: We describe herein the advantages of identifying the most accurate scale and propose its standardized use.  MATERIALS AND METHODS: We analyzed 188 patients that underwent percutaneous nephrolithotomy for kidney stones within the time frame of October 2010 and July 2015 at a tertiary care referral center. Preoperative and postoperative non-contrast computed tomography scans were used in all patients to compare the four scoring systems, using the strict criterion of absolute absence of residual stone as the stone-free rate.  RESULTS:  The overall stone-free rate was 57.9%. All scoring systems presented a statistically significant stone-free rate (p&lt;0.001). Only the Guy&#8217;s stone score had no correlation with postoperative complications. The four scoring systems had similar accuracy, none of them were more predictive for stone-free rate than the other, and there was no significant difference in the areas under the curve between them (p=0.2). In addition, each scale had a correlation with operative time and length of hospital stay.  CONCLUSIONS:  The four scales analyzed were excellent predictors for stone-free rate. They had similar receiver operating characteristic curves and areas under the curve, with no significant differences between them. However, the Guy&#8217;s stone score presented the best predictive capacity and the S-ReSC scoring system was the best method for predicting complications. It is up to the urologic community to decide which evidence-based scale is the most suitable. Meanwhile, the need for a standardized method continues to grow.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  ANTECEDENTES:  las escala de Guy y S.T.O.N.E., Nefrolitometría, CROES y el sistema de puntuación S-ReSC se validaron recientemente como predictores efectivos de la tasa libre de litiasis posterior a la nefrolitotomía percutánea.  OBJETIVO:  describir las ventajas e identificar la escala más precisa y proponer su utilización.  MATERIALES Y MÉTODOS:  estudio retrospectivo de pacientes a quienes se realizó nefrolitotomía percutánea para cálculos renales entre los meses de octubre de 2010 a julio de 2015 en un centro de referencia de atención terciaria. En todos los pacientes se indicaron estudios pre y posoperatorios de tomografía computada sin contraste para comparar las cuatro escalas, se utilizó el criterio estricto de ausencia absoluta de litiasis residual, que se consideró tasa libre.  RESULTADOS:  se estudiaron 188 pacientes en quienes la tasa libre de litiasis fue de 57.9%. Todos los sistemas de puntuación reportaron una tasa libre de cálculos estadísticamente significativa (p &lt; 0.001), excepto las escala de Guy y S.T.O.N.E no tuvieron correlación con las complicaciones posoperatorias. Los cuatro sistemas de puntuación tuvieron una precisión similar, ninguno fue más predictivo que otro para la tasa libre de litiasis y entre ellas no hubo diferencias significativas en las áreas bajo la curva (p = 0.2). Además, cada escala tuvo una correlación con el tiempo operativo y la duración de la estancia hospitalaria.  CONCLUSIONES:  las cuatro escalas analizadas son excelentes predictores de la tasa libre de litiasis pues tuvieron receptores, curvas características de funcionamiento y áreas bajo la curva similares, sin diferencias significativas entre ellas. Sin embargo, las escalas de Guy y S.T.O.N.E tuvo la mejor capacidad predictiva y el puntaje S-ReSC fue el mejor método para predecir complicaciones. Depende de la comunidad urológica decidir cuál escala basada en la evidencia es la más adecuada. Mientras tanto, la necesidad de un método estandarizado sigue creciendo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Stone-free rate]]></kwd>
<kwd lng="en"><![CDATA[Percutaneous nephrolithotomy]]></kwd>
<kwd lng="en"><![CDATA[CROES]]></kwd>
<kwd lng="en"><![CDATA[S-ReSC S.T.O.N.E.]]></kwd>
<kwd lng="en"><![CDATA[Guy&#8217;s stone score]]></kwd>
<kwd lng="es"><![CDATA[tasa libre de litiasis]]></kwd>
<kwd lng="es"><![CDATA[nefrolitotomía percutánea]]></kwd>
<kwd lng="es"><![CDATA[CROES]]></kwd>
<kwd lng="es"><![CDATA[S-ReSC S.T.O.N.E.]]></kwd>
<kwd lng="es"><![CDATA[escala de Guy]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fernstrom]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Johannson]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Percutaneous pyelolithotomy: a new extraction technique]]></article-title>
<source><![CDATA[Scand J Urol Nephrol]]></source>
<year>1976</year>
<volume>10</volume>
<page-range>257-9</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Preminger]]></surname>
<given-names><![CDATA[GM]]></given-names>
</name>
<name>
<surname><![CDATA[Assimos]]></surname>
<given-names><![CDATA[DG]]></given-names>
</name>
<name>
<surname><![CDATA[Lingeman]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[Nakada]]></surname>
<given-names><![CDATA[SY]]></given-names>
</name>
<name>
<surname><![CDATA[Pearle]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
<name>
<surname><![CDATA[Wolf Jr]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chapter 1: AUA guideline on management of staghorn calculi: diagnosis and treatment recommendations]]></article-title>
<source><![CDATA[J Urol]]></source>
<year>2005</year>
<volume>173</volume>
<page-range>1991-2000</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Binbay]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Akman]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Ozgor]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Yazici]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Sari]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Erbin]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kezer]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Sarilar]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Berberoglu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Muslumanoglu]]></surname>
<given-names><![CDATA[AY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Does pelvicaliceal system anatomy affect success of percutaneous nephrolithotomy?]]></article-title>
<source><![CDATA[Urology]]></source>
<year>2011</year>
<volume>78</volume>
<page-range>733-7</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mishra]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Sabnis]]></surname>
<given-names><![CDATA[RB]]></given-names>
</name>
<name>
<surname><![CDATA[Desai]]></surname>
<given-names><![CDATA[MR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Percutaneous nephrolithotomy monotherapy for staghorn: paradigm shift for &#8216;staghorn morphometry&#8217; based clinical classification]]></article-title>
<source><![CDATA[Curr Opin Urol]]></source>
<year>2012</year>
<volume>22</volume>
<page-range>148-53</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thomas]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[NC]]></given-names>
</name>
<name>
<surname><![CDATA[Hegarty]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Glass]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Guy&#8217;s stone score-grading the complexity of percutaneous nephrolithotomy procedures]]></article-title>
<source><![CDATA[Urology]]></source>
<year>2011</year>
<volume>78</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>277-81</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Okhunov]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Friedlander]]></surname>
<given-names><![CDATA[JI]]></given-names>
</name>
<name>
<surname><![CDATA[George]]></surname>
<given-names><![CDATA[AK]]></given-names>
</name>
<name>
<surname><![CDATA[Duty]]></surname>
<given-names><![CDATA[BD]]></given-names>
</name>
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[DM]]></given-names>
</name>
<name>
<surname><![CDATA[Srinivasan]]></surname>
<given-names><![CDATA[AK]]></given-names>
</name>
<name>
<surname><![CDATA[Hillelsohn]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[AD]]></given-names>
</name>
<name>
<surname><![CDATA[Okeke]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[S.T.O.N.E. nephrolithometry: novel surgical classification system for kidney calculi]]></article-title>
<source><![CDATA[Urology]]></source>
<year>2013</year>
<volume>81</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1154-9</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Averch]]></surname>
<given-names><![CDATA[TD]]></given-names>
</name>
<name>
<surname><![CDATA[Shahrour]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Opondo]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Daels]]></surname>
<given-names><![CDATA[FP]]></given-names>
</name>
<name>
<surname><![CDATA[Labate]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Turna]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[de la Rosette]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A nephrolithometric nomogram to predict treatment success of percutaneous nephrolithotomy]]></article-title>
<source><![CDATA[J Urol]]></source>
<year>2013</year>
<volume>190</volume>
<page-range>149</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jeong]]></surname>
<given-names><![CDATA[CW]]></given-names>
</name>
<name>
<surname><![CDATA[Jung]]></surname>
<given-names><![CDATA[J-W]]></given-names>
</name>
<name>
<surname><![CDATA[Cha]]></surname>
<given-names><![CDATA[WH]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[BK]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Jeong]]></surname>
<given-names><![CDATA[SJ]]></given-names>
</name>
<name>
<surname><![CDATA[Hong]]></surname>
<given-names><![CDATA[SK]]></given-names>
</name>
<name>
<surname><![CDATA[Byun]]></surname>
<given-names><![CDATA[SS]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[SE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Seoul National University Renal Stone Complexity Score for Predicting Stone-Free Rate after Percutaneous Nephrolithotomy]]></article-title>
<source><![CDATA[PLoS ONE]]></source>
<year>2013</year>
<volume>8</volume>
<numero>6</numero>
<issue>6</issue>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sfoungaristos]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Lorber]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Gofrit]]></surname>
<given-names><![CDATA[EN]]></given-names>
</name>
<name>
<surname><![CDATA[Yutkin]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Landau]]></surname>
<given-names><![CDATA[EH]]></given-names>
</name>
<name>
<surname><![CDATA[Pode]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Duvdevani]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[External Validation and Predictive Accuracy Assessment of Guy's Stone Score as a Preoperative Tool for Estimating Percutaneous Nephrolithotomy Outcomes]]></article-title>
<source><![CDATA[J Endourol]]></source>
<year>2015</year>
<volume>29</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>1131-5</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mandal]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Goel]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kathpalia]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Sankhwar]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Sinha]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[BP]]></given-names>
</name>
<name>
<surname><![CDATA[Dalela]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prospective evaluation of complications using the modified Clavien grading system, and of success rates of percutaneous nephrolithotomy using Guy&#8217;s Stone Score: a single-center experience]]></article-title>
<source><![CDATA[Indian J Urol]]></source>
<year>2012</year>
<volume>28</volume>
<page-range>392</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ingimarsson]]></surname>
<given-names><![CDATA[JP]]></given-names>
</name>
<name>
<surname><![CDATA[Dagrosa]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
<name>
<surname><![CDATA[Hyams]]></surname>
<given-names><![CDATA[ES]]></given-names>
</name>
<name>
<surname><![CDATA[Pais Jr]]></surname>
<given-names><![CDATA[VM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[External validation of a preoperative renal stone grading system: reproducibility and inter-rater concordance of the Guy&#8217;s stone score using preoperative computed tomography and rigorous postoperative stone-free criteria]]></article-title>
<source><![CDATA[Urology]]></source>
<year>2014</year>
<volume>83</volume>
<page-range>45</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Okhunov]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[George]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Multicenter validation of S.T.O.N.E. nephrolithometry]]></article-title>
<source><![CDATA[J Urol]]></source>
<year>2014</year>
<volume>191</volume>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vicentini]]></surname>
<given-names><![CDATA[FC]]></given-names>
</name>
<name>
<surname><![CDATA[Marchini]]></surname>
<given-names><![CDATA[GS]]></given-names>
</name>
<name>
<surname><![CDATA[Mazzucchi]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Claro]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<name>
<surname><![CDATA[Srougi]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Utility of the Guy&#8217;s stone score based on computed tomographic scan findings for predicting percutaneous nephrolithotomy outcomes]]></article-title>
<source><![CDATA[Urology]]></source>
<year>2014</year>
<volume>83</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1248-53</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Okhunov]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Helmy]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Perez-Lansac]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Menhadji]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Bucur]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Kolla]]></surname>
<given-names><![CDATA[SB]]></given-names>
</name>
<name>
<surname><![CDATA[Cho]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
<name>
<surname><![CDATA[Osann]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Lusch]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Landman]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Interobserver reliability and reproducibility of S.T.O.N.E. nephrolithometry for renal calculi]]></article-title>
<source><![CDATA[J Endourol]]></source>
<year>2013</year>
<volume>27</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>1303-6</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Choo]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
<name>
<surname><![CDATA[Jeong]]></surname>
<given-names><![CDATA[CW]]></given-names>
</name>
<name>
<surname><![CDATA[Jung]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[SB]]></given-names>
</name>
<name>
<surname><![CDATA[Jeong]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Son]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[HH]]></given-names>
</name>
<name>
<surname><![CDATA[Oh]]></surname>
<given-names><![CDATA[SJ]]></given-names>
</name>
<name>
<surname><![CDATA[Cho]]></surname>
<given-names><![CDATA[SY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[External Validation and Evaluation of Reliability and Validity of the S-ReSC Scoring System to Predict Stone-Free Status after Percutaneous Nephrolithotomy]]></article-title>
<source><![CDATA[PLoS ONE]]></source>
<year>2014</year>
<volume>9</volume>
<numero>1</numero>
<issue>1</issue>
</nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Labadie]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Okhunov]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Akhavein]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[DM]]></given-names>
</name>
<name>
<surname><![CDATA[MorenoPalacios]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Del Junco]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Okeke]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Bird]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[AD]]></given-names>
</name>
<name>
<surname><![CDATA[Landman]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation and comparison of urolithiasis scoring systems used in percutaneous kidney stone surgery]]></article-title>
<source><![CDATA[J Urol]]></source>
<year>2015</year>
<volume>193</volume>
<page-range>154-9</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sfoungaristos]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Gofrit]]></surname>
<given-names><![CDATA[ON]]></given-names>
</name>
<name>
<surname><![CDATA[Yutkin]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Landau]]></surname>
<given-names><![CDATA[EH]]></given-names>
</name>
<name>
<surname><![CDATA[Pode]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Duvdevani]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[External validation of CROES nephrolithometry as a preoperative predictive system for percutaneous nephrolithotomy outcomes]]></article-title>
<source><![CDATA[J Urol]]></source>
<year>2016</year>
<volume>195</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>372-6</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shahrour]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Andonian]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ambulatory percutaneous nephrolithotomy: initial series]]></article-title>
<source><![CDATA[Urology]]></source>
<year>2010</year>
<volume>76</volume>
<page-range>1288-92</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Louie]]></surname>
<given-names><![CDATA[MK]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[HJ]]></given-names>
</name>
<name>
<surname><![CDATA[Osann]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Pick]]></surname>
<given-names><![CDATA[DL]]></given-names>
</name>
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[McDougall]]></surname>
<given-names><![CDATA[EM]]></given-names>
</name>
<name>
<surname><![CDATA[Clayman]]></surname>
<given-names><![CDATA[RV]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prospective randomized trial of three different methods of nephrostomy tract closure after percutaneous nephrolithotripsy]]></article-title>
<source><![CDATA[BJU Int]]></source>
<year>2011</year>
<volume>107</volume>
<page-range>1660</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tiselius]]></surname>
<given-names><![CDATA[HG]]></given-names>
</name>
<name>
<surname><![CDATA[Andersson]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Stone burden in an average Swedish population of stone formers requiring active stone removal: how can the stone size be estimated in the clinical routine?]]></article-title>
<source><![CDATA[Eur Urol]]></source>
<year>2003</year>
<volume>43</volume>
<page-range>275</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[de la Rosette]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
<name>
<surname><![CDATA[Opondo]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Daels]]></surname>
<given-names><![CDATA[FP]]></given-names>
</name>
<name>
<surname><![CDATA[Giusti]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Serrano]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kandasami]]></surname>
<given-names><![CDATA[SV]]></given-names>
</name>
<name>
<surname><![CDATA[Wolf Jr]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
<name>
<surname><![CDATA[Grabe]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Gravas]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Categorisation of complications and validation of the Clavien score for percutaneous nephrolithotomy]]></article-title>
<source><![CDATA[Eur Urol]]></source>
<year>2012</year>
<volume>62</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>246-55</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tefekli]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Ali-Karadag]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Tepeler]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Sari]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Berberoglu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Baykal]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Sarilar]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Muslumanoglu]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Classification of percutaneous nephrolithotomy complications using the modified Clavien grading system: looking for a standard]]></article-title>
<source><![CDATA[Eur Urol]]></source>
<year>2008</year>
<volume>53</volume>
<page-range>184-90</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hyams]]></surname>
<given-names><![CDATA[ES]]></given-names>
</name>
<name>
<surname><![CDATA[Bruhn]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Lipkin]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Shah]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heterogeneity in the reporting of disease characteristics and treatment outcomes in studies evaluating treatments for nephrolithiasis]]></article-title>
<source><![CDATA[J Endourol]]></source>
<year>2010</year>
<volume>24</volume>
<page-range>1411</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Opondo]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Gravas]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Joyce]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Pearle]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Matsuda]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[YH]]></given-names>
</name>
<name>
<surname><![CDATA[Assimos]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Denstedt]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[de la Rosette]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Standardization of patient outcomes reporting in percutaneous nephrolithotomy]]></article-title>
<source><![CDATA[J Endourol]]></source>
<year>2014</year>
<volume>28</volume>
<page-range>767</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rassweiler]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
<name>
<surname><![CDATA[Renner]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Eisenberger]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The management of complex renal stones]]></article-title>
<source><![CDATA[BJU Int]]></source>
<year>2000</year>
<volume>86</volume>
<page-range>919-28</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Raman]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
<name>
<surname><![CDATA[Bagrodia]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Gupta]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Bensalah]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Cadeddu]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Lotan]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Pearle]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Natural history of residual fragments following percutaneous nephrostolithotomy]]></article-title>
<source><![CDATA[J Urol]]></source>
<year>2009</year>
<volume>181</volume>
<page-range>1163-8</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ganpule]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Desai]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fate of residual stones after percutaneous nephrolithotomy: a critical analysis]]></article-title>
<source><![CDATA[J Endourol]]></source>
<year>2009</year>
<volume>23</volume>
<page-range>399-403</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Heidenreich]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Desgrandschamps]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Terrier]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modern approach of diagnosis and management of acute flank pain: review of all imaging modalities]]></article-title>
<source><![CDATA[Eur Urol]]></source>
<year>2002</year>
<volume>41</volume>
<page-range>351-62</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gokce]]></surname>
<given-names><![CDATA[MI]]></given-names>
</name>
<name>
<surname><![CDATA[Ozden]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Suer]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Gulpinar]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Gulp&#305;nar]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Tangal]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparison of imaging modalities for detection of residual fragments and prediction of stone related events following percutaneous nephrolithotomy]]></article-title>
<source><![CDATA[Int Braz J Urol]]></source>
<year>2015</year>
<volume>41</volume>
<page-range>86-90</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Altunrende]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Tefekli]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Stein]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
<name>
<surname><![CDATA[Autorino]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Yuruk]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Laydner]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Binbay]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Muslumanoglu]]></surname>
<given-names><![CDATA[AY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinically insignificant residual fragments after percutaneous nephrolithotomy: medium-term follow-up]]></article-title>
<source><![CDATA[J Endourol]]></source>
<year>2011</year>
<volume>25</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>941-5</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Noureldin]]></surname>
<given-names><![CDATA[YA]]></given-names>
</name>
<name>
<surname><![CDATA[Elkoushy]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Andonian]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Which is better? Guy's versus S.T.O.N.E. nephrolithometry scoring systems in predicting stone-free status post-percutaneous nephrolithotomy]]></article-title>
<source><![CDATA[World J Urol]]></source>
<year>2015</year>
<volume>33</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>1821-5</page-range></nlm-citation>
</ref>
<ref id="B32">
<label>32</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bozkurt]]></surname>
<given-names><![CDATA[IH]]></given-names>
</name>
<name>
<surname><![CDATA[Aydogdu]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Yonguc]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Yarimoglu]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Sen]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Gunlusoy]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Degirmenci]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparison of Guy and Clinical Research Office of the Endourological Society Nephrolithometry Scoring Systems for Predicting Stone- Free Status and Complication Rates After Percutaneous Nephrolithotomy: A Single Center Study with 437 Cases]]></article-title>
<source><![CDATA[J Endourol]]></source>
<year>2015</year>
<volume>29</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>1006-10</page-range></nlm-citation>
</ref>
<ref id="B33">
<label>33</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhu]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Xi]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Bai]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Logistic regression model for predicting stone-free rate after minimally invasive percutaneous nephrolithotomy]]></article-title>
<source><![CDATA[Urology]]></source>
<year>2011</year>
<volume>78</volume>
<page-range>32-6</page-range></nlm-citation>
</ref>
<ref id="B34">
<label>34</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Desai]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[De Lisa]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Turna]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Rioja]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Walfridsson]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[D'Addessi]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The clinical research office of the endourological society percutaneous nephrolithotomy global study: staghorn versus nonstaghorn stones]]></article-title>
<source><![CDATA[J Endourol]]></source>
<year>2011</year>
<volume>25</volume>
<page-range>1263-8</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
