1028-9933 1028-9933 S1028-99332018000200369 Cuba Cuba 00 04 2018 00 04 2018 97 2 369 376

1 2007 2 2009 55 3 3 158-69 3 2010 23 1 1 033-8 4 2013 30 4 4 453 5 2008 14 1 1 179-87 6 1999 18 1 1 75-83 7 2006 1 1 8 2016 9 1997