0186-2391 0186-2391 S0186-23912018000100091 10.18233/apm1no1pp91-921545 Peru 00 02 2018 00 02 2018 39 1 91 92 1 2017 38 05 05 299-307 2 2015 33 3 3 1156-64 3 2008 29 730e735 4 2012 54 1e7 5 2013 41 925e927 6 2015 33 1 1 342-9