0120-9957 0120-9957 S0120-99572018000300328 Colombia Colombia Colombia Colombia Colombia 00 09 2018 00 09 2018 33 3 328 331 1 2012 19 3 3 140-51 2 2014 38 3 3 410-20 3 2014 41 11 11 839-45 4 2014 38 12 12 1583-610