1561-3194 1561-3194 S1561-31942018000600046 Cuba 00 12 2018 00 12 2018 22 6 46 54

1 2015 14 4 4 2 2016 3 2013 15 2 2 4 2012 16 1 1 5 2017 6 2014 18 3 3 7 2013 29 2 2 8 2013 9 2013 17 3 3 10 2013 85 2 2 11 2017 12 2015 13 2016 79 3 3 14 2017 89 4 4