1727-897X 1727-897X S1727-897X2020000500937 Cuba Cuba 00 10 2020 00 10 2020 18 5 937 942

1 2003 17 1 1 25-38 2 2019 195 792 792 10 3 2004 10 10 4 2001 5 2010 7ma 6 2002 7 2010