0120-5307 0120-5307 S0120-53072017000100100 10.17533/udea.iee.v35n1a12 Colombia Colombia Canada 00 01 2017 00 01 2017 35 1 100 106

World Health Organization 2012 2009 123 951-8 2009 16 1533-9 2011 28 2 2 166-73 2006 6 6 6 333-40 2011 12 4 4 849-58 2013 31 3 3 354-63 2009 94 2 2 98-104 2013 13 3 3 181-7 2014 32 3 3 379-92 2002 157-77 1967 2013 17 2 2 277-83 2012 65 4 4 571-7 2010 12 3 3 356-67 29 1 1 120-9 2009 18 3 3 23-9 2013 22 2 2 113-9 2014 23 4 4 828-35 2011 34 1 1 20-34 2013 33 6 6 415-21 2006 118 Supplement 2 Supplement 2 2003 42 578-86 2006 14 1 1 93-101