0012-7353 0012-7353 S0012-73532019000300174 10.15446/dyna.v86n210.72932 Chile Chile 00 07 2019 00 07 2019 86 210 174 178

[1] 2016 14 11 11 214 [2] 2015 13 8 8 5128-55 [3] 1980 5 1 1 3-13 [4] 2014 13 [5] 2015 76 3 3 735-50 [6] 2008 4 265-308 [7] 1996 63 3 3 257-64 [8] 2011 91 7 7 1166-74 [9] 2017 28 3 3 46-50 [10] 2018 240 90-103 [11] 2012 55 4 4 477-83 [12] 2009 53 12 12 1603-11 [13] 2011 9 10 10 1806-28 [14] 2016 28 3 3 1579-88 [15] 2003 68 4 4 1144-8 [16] 2012 166 7 7 1843-55 [17] 2003 254 37-48 [18] 2015 184 291-6 [19] 2008 10 1 1 31-6 [20] 2007 9 9 9 927-34 [21] 2013 405 13 13 4607-16