1405-9436 1405-9436 S1405-94362017000200177 Colombia Colombia 00 12 2017 00 12 2017 5 46 177 201

2007 30 30 262-82 2011 31 31 2002 2002 147-77 2012 08 2008 2008 2011 31 31 2008 2009 2011 2013 2004 1996 265-302 2011 6 1 1 95-101 2002 2005