1028-9933 1028-9933 S1028-99332020000400379 Cuba 00 08 2020 00 08 2020 99 4 379 385

1 2006 2 2016 20 11 11 9-14 3 2008 16 1 1 10-20 4 2014 27 1 1 146-51 5 2017 91 3 3 142-7 6 2019 23 5 5 7 2002 86 2002 2002 168-73 8 2013 27 2 2 119-27