0120-4157 0120-4157 S0120-41572018000300295 Colombia 00 09 2018 00 09 2018 38 3 295 297 1 1996 23 2 2013 36 329-35 3 2014 41 453-9 4 2000 67 1277-86 5 2000 67 1287-95 6 2017 48 58-63 7 8 2006 22 55-8