1727-897X 1727-897X S1727-897X2021000300536 Cuba Cuba 00 06 2021 00 06 2021 19 3 536 539

1 2019 2 2020 12 3 3 3 2016 4 2019 9 2 2 5 2019 6 2016 7 2016 48 1 1 8 2018 9 2019 51 3 3 10 2018