0120-6230 0120-6230 S0120-62302019000100009 10.17533/udea.redin.n90a02 Colombia USA 00 03 2019 00 03 2019 90 9 15

[1] 2010 [2] 2008 [3] 1984 [4] 1987 [5] 2015 2 1 1 100-14 [6] 2012 16 197-202 [7] 1996 17-29 [8] 2014 140 4 4 [9] 2016 [10] 2016 [11] 2012 [12] 2014 268 139-49