1608-8921 1608-8921 S1608-89212019000200128 Cuba 00 08 2019 00 08 2019 21 2 128 133

1 2003 61 2 2 269-71 2 2001 37 8 8 673-5 3 2012 26 1 1 64-75 4 2008 5 57 57 18-20 5 2007