0012-7353 0012-7353 S0012-73532018000200064 10.15446/dyna.v85n205.60221 Colombia Colombia Colombia Colombia Colombia Colombia 00 06 2018 00 06 2018 85 205 64 68

[1] 2015 137 15 15 5074-9 [2] 2005 5778 5778 347-58 [3] 2008 62 8 8 906-15 [4] 2009 63 1 1 92-7 [5] 2010 35 1 1 31-7 [6] 2012 37 4 4 413-21 [7] 1999 44 3 3 603-8 [8] 2015 146 7 7 1153-60 [9] 1999 30 6 6 479-84 [10] 2012 58 58 67-73 [11] 1993 49 13-14 13-14 2007-26 [12] 1960 16 4 4 428-42