2007-4085 2007-4085 S2007-40852018000400263 10.24245/revmexurol.v78i4.2129 México México México México 00 08 2018 00 08 2018 78 4 263 272

1 2009 73 6 6 1255-7 2 2017 176 435-41 3 2014 82 2 2 157-62 4 1989 11 2 2 37-42 5 2016 12 3 3 1-7 6 1986 324 1-52 7 2017 11 1-2 1-2 S48-53 8 1997 12 2-3 2-3 81-5 9 2017 16 1 1 8-15 10 11 2000 86 1050-3 12 1994 151 2 2 464-5 13 2017 197 3 3 852-8 14 2004 240 2 2 205-13 15 2008 15 8 8 651-64 16 2008 24 2 2 241-8 17 2016 5 2379 18 2000 2 53 53 155-8 19 2013 189 6 6 2276-81 20 2002 89 3 3 291-4 21 2013 189 6 6 2276-81 22 2002 89 1 1 98-100 23 2003 42 35-7 24 2013 9 6 6 1126-30 25 2002 90 1 1 88-91 26 2014 40 5 5 588-95 27 2012 408-13 28 American Academy of Pediatrics 29 2012 62 3 3 534-42 30 2006 68 3 3 648-51 31 2008 24 2 2 188-94