1665-1146 1665-1146 S1665-11462020000300119 10.24875/bmhim.20000027 Mexico Canada 00 06 2020 00 06 2020 77 3 119 126

1 2017 33 492-503 2 2012 29 357-60 3 2013 28 27-35 4 2003 3 9-21 5 2007 8 171-83 6 2006 40 489-96 7 2016 2 49-60 8 2006 17 243-9 9 2011 2 33-41 10 2007 25 3-23 11 2002 2 439-50 12 2006 104 345-50 13 2008 6 27-36 14 2014 15 1981 34 1593-9 16 Centros Para el Control y la Prevención de Enfermedades c201 5 17 2011 18 2005 19 2006 5 1 20 2011 11 S2-15 21 1959 22 719-48 22 2011 61 20-7 23 2001 21 325-44 24 2006 77 45-51 25 2007 2 71-85 26 2009 9 313 27 2014 29 415-32 28 2005 36 267e16-20 29 2011 8 385-9 30 2005 2 91-103 31 2001 138 181-7 32 2001 29 37-44 33 2003 33 320-32 34 2004 51 178-91