0120-3630 0120-3630 S0120-36302019000100014 10.15446/rbct.n45.68711 Ecuador Cuba 00 06 2019 00 06 2019 45 14 21

[1] 2016 Madrid, España [2] 2003 130 130 64-78 [3] 2001 4 1 1 1-7 [4] 1979 [5] 2013 29 2 2 46-70 [6] 2013 29 3 3 65-88 [7] 2008 [8] 2009 [9] 2005 [10] 2006 [11] 2000 3 3 1-5 [12] 2004 X 25 25 163-8