1561-3194 1561-3194 S1561-31942020000200274 Cuba Cuba 00 04 2020 00 04 2020 24 2 274 280

1 2015 21 2 2 2 2016 20 4 4 3 2017 21 3 3 4 2014 36 ^s1 ^s1 1 5 2014 6 2014 7 2014 8 2016 9 2016 20 4 4 10 2018 16 3 3