1727-897X 1727-897X S1727-897X2020000300453 Cuba Cuba 00 06 2020 00 06 2020 18 3 453 464

1 2017 21 2 2 16 2 2018 96 9 9 14 3 2014 39 6 6 12 4 2016 55 4 4 17 5 2013 28 1 1 50-5 6 2012 72 1 1 23 7 2015 8 2011 711-32 9 2019 129 223-7 10 2019 234 23-9 11 2004 18 98-105