1561-3194 1561-3194 S1561-31942019000400568 Cuba Cuba Cuba 00 08 2019 00 08 2019 23 4 568 577

1 2017 19 76 76 2 2017 37 2 2 3 2016 25 3 3 4 2016 28 4 4 5 2018 6 2017 26 3 3 7 2014 61 3 3 8 2018 41 2 2 9 2014 29 4 4 10 2016 11 2015 12 2017 13 2018 39 2 2 14 2018 49 1 1 15 2016 6 IV IV