0186-2391 0186-2391 S0186-23912016000600355 10.18233/apm37no6pp355-357 México 00 12 2016 00 12 2016 37 6 355 357 2016 3 239-41 World Health Organization (WHO) 2009 Centers for Disease Control and Prevention 2002 5 16 16 1-45