0120-0011 0120-0011 S0120-00112016000400595 10.15446/revfacmed.v64n4.55881 Colombia 00 12 2016 00 12 2016 64 4 595 596 2014 23rd ed 1960 1998 1995 1991 84 43 43 140-2 1998 1 3 3 31-6 2006 24 4 4 204-7 2006 7 45 45 4-9