1659-1321 1659-1321 S1659-13212020000100193 10.15517/am.v31i1.36677 Colombia Colombia Colombia Colombia Colombia 00 04 2020 00 04 2020 31 1 193 208

2012 24 3 3 2018 7 303-8 2005 2003 4 2005 2008 2 2014 108 51-62 2016 40 107-16 2011 4 1 1 29-35 2017 28 405-26 2012 35 417-30 2016 39 125-32 2018 2012 1-6 2019 30 803-19 1991 25 275-80 2011 3 2015 53-7 2014 25 393-403 2017 28 213-22 2014 2015 6 1 1 155-68 2000 49 201-21 2006 6 2 2 189-97 2000 2012 35 275-82 2019 11 1 1 2003 2012 30 317-25 2002 15 213-25 2005 17 9 2005 6 2 2 69-80 2009 27 2 2 121-34 2017 2005 2011 2016 2013 60 32-48 1999 2011 261 1654-63 NRC (National Research Council) 2001 7 1990 2006 2011 83 181 R Development Core Team 2008 2001 27-31 2015 27 10 2012 13 71-8 2012 46 423-6 2015 2010 2011 2 1 1 55-64 1994 158-67 2014 1994 2 2011 12 5 5 2014