1608-8921 1608-8921 S1608-89212020000300111 Cuba 00 12 2020 00 12 2020 22 3 111 118

1 2013 2 2016 17 2 2 130-7 3 2000 14 1-2 1-2 66-9 4 2011 50 4 4 338-40 5 2016 38 4 4 514-6 6 2011 12 1 1 7 2010 75 4 4 341-30 8 1972 25 1 1 3-16