2256-5493 2256-5493 S2256-54932017000100197 Colombia Colombia 00 12 2017 00 12 2017 19 197 209

2011 1973 2012 2005 20 1 1 13-54 1998 I 2011 2013 2014 1977 1977 2006 2007 2017 2016 2013