0034-7493 0034-7493 S0034-74932020000200001 Cuba 00 06 2020 00 06 2020 59 2 1 1970 2 2009 3 2002 9 835-9 4 1998 83 25-8 5 1998 83 37-9 6 1998 228 1 1 16-28 7 2017 213 51-9 8 2018 84 4 4 543-6 9 2016 17 6 6 734-40 10 2017 30 4 4 452-60