1028-9933 1028-9933 S1028-99332018000500923 Cuba Cuba Cuba 00 10 2018 00 10 2018 97 5 923 933

1 2003 2 2013 50 4 4 364-73 3 2011 25 4 4 298-307 4 2009 34 1 1 5 2012 6 2013 7 2 2 235-9 7 2007 8 2006 10 2 2 9 2008 33 4 4 10 2003 5 3 3 11 2007 44 3 3 12 2011 2 4 4 334-9