1608-8921 1608-8921 S1608-89212019000200013 Cuba Cuba 00 08 2019 00 08 2019 21 2 13 16 1 2011 25 1 1 3-13 2 2014 3 27 27 42-52 3 2005 8 6 6 4 2009 35 35 97-103 5 2011 3 2 2 16-25 6 2013 18 1 1 78-82