0121-750X 0121-750X S0121-750X2018000200113 10.14483/23448393.13388 Colombia 00 08 2018 00 08 2018 23 2 113 116 [1] 2013 18 2 2 3-4 [2] 2015 20 2 2 163-6 [3] 2016 21 3 3 255-9 [4] 2017 22 3 3 304-5 [5] Google Scholar 2017 [6] 2018 23 1 1 4-6 [7] 2010 15 1 1 3-4