0120-0011 0120-0011 S0120-00112016000300417 10.15446/revfacmed.v64n3.53961 Colombia Colombia 00 09 2016 00 09 2016 64 3 417 425

2015 373 16 16 1541-52 2011 117 4788-95 2006 354 2 2 166-78 2013 44 3 3 155-64 2014 2015 62 8 8 1395-402 Instituto Nacional de Salud 2014 2008 22 5 5 989-97 2014 32 3 3 174-84 2012 26 9 9 1908-75 2010 67 6 6 518-35 1998 352 9142 9142 1731-8 2000 96 8 8 2691-6