1815-7696 1815-7696 S1815-76962019000400565 Cuba 00 12 2019 00 12 2019 17 4 565 573

2013 41 21 21 61-70 2018 64 6 6 12-23 2019 8 1 1 23-31 2010 6 2010 2010 3-14 1962 2018 5 14 14 1-21 2019 2 4 4 1-26 2003 2018 2018 21 3 3 641-72