0188-8897 0188-8897 S0188-88972017000200153 Mexico Mexico Mexico Mexico 00 08 2017 00 08 2017 27 2 153 161

2004 127 21-6 1999 39 123-8 2000 28 26-36 American Public Health Association 2005 1992 2009 90 81-9 2009 32 1682-94 2009 30 16-23 1997 43 895-914 2007 20 619-26 2012 83-100 2004 96 473-80 2000 8 298-300 1987 4 131-3 1997 22 325-34 2006 9 379-85 1980 118-41 2000 4 91-103 2004 6 347-62 2007 1 56-71 2008 64 283-96 2009 118 1118-20 2006 52 1-10 1990 172 5742-9 2010 22 131-47 2005 71 2484-92 2010 21 339-45 2006 52 1523-33 2006 Bremen 1990 52 7-22 1991 173 697-703 1993 31 253-73 2010 44 6470-4 2006 64 991-7