1665-5044 1665-5044 S1665-50442020000500187 10.24875/rmn.20000015 Mexico Mexico Mexico México Mexico Mexico 00 10 2020 00 10 2020 21 5 187 191

1 2013 20 146-50 2 2009 18 208-13 3 2016 38 655-62 4 2014 11 18-24 5 1996 132 223-30 6 2007 3rd ed 7 2004 8 2017 87 286-91 9 10 2010 11 World Health Organization 12 2007 77 31-9 13 2017 52 671-80 14 2015 49 825-7