1028-9933 1028-9933 S1028-99332018000300574 Cuba Cuba Cuba Cuba 00 06 2018 00 06 2018 97 3 574 583

1 2010 2 2012 3 2013 85 4 4 414-7 4 2014 53 1 1 52-9 5 1976 6 2013 7 2012 8 2013 9 2012 10 2000 63 9 9 321-2 11 2015 12 2018 97 2 2 13 2015 14 2011 15 2016 16 2012 17 2016