1727-897X 1727-897X S1727-897X2021000400546 Cuba 00 08 2021 00 08 2021 19 4 546 550

1 1996 34 2 2 28-31 2 2015 25 3 3 3 2018 4 2006 5 2017 6 2018 3 2 2 7 2015 19 1 1 8 2017 3 2 2 9 2016 20 6 6 10 2012 29 2 503-11 2