0012-7353 0012-7353 S0012-73532020000200085 10.15446/dyna.v87n213.84413 Chile Chile 00 06 2020 00 06 2020 87 213 85 90

[1] 2009 50 2 2 89-96 [2] 2006 19 12 12 1234-45 [3] 2011 89 12 12 2761-9 [4] 2017 169 245-52 [5] 2019 29 1107-16 [6] 2011 109 3-4 3-4 245-51 [7] 2013 133 156-60 [8] 2010 104 2 2 308-12 [9] 2006 13 6 6 668-72 [10] 2013 49 2 2 92-9 [11] 2012 48 2 2 107-17 [12] 2011 29 5-6 5-6 854-67 [13] 2004 59 15 15 3105-15 [14] 2003 1-24 [15] 1993 [16] 2006 81 3-4 3-4 205-13 [17] 1997 10 5 5 467-81 [18] 1992 5 3-5 3-5 521-34 [19] 2007 89 1-2 1-2 11-20 [20] 2002 102 8 8 435-43 [21] 2003 55 7 7 34-7 [22] 1985 63 3 3 368-76