0121-3709 0121-3709 S0121-37092017000200046 10.22579/20112629.417 Colombia Colombia 00 12 2017 00 12 2017 21 2 46 50

2013 3 7 7 226-31 2012 54 54 3892-900 2007 29 1 1 17-21 2010 7 5 5 1346-52 2010 39 8 8 1748-55 2010 1 5 5 112-5 2002 10 2012 13 1 1 204-13 2013 17 1 1 32-9 National Research Council, NRC. 1994 44-5 2011 2 186 2007 283 2009 38 8 8 1509-17 2016 37 4^s1 4^s1 1 2395-406 2012 35