0124-8693 0124-8693 S0124-86932013000100187 Colombia Colombia Colombia Colombia 00 06 2013 00 06 2013 14 1 187 215

1 2007 2 MEN 2009 12 3 1999 4 2012 5 1998 3 6 1988 7 1998 8 2008 2008 9 2005 10 ICFES 2007 11 1994 12 1998 13 2003 14 2012 15 2002 16 2003 17 1979 18 1999