1726-6718 1726-6718 S1726-67182021000200012 Cuba 00 08 2021 00 08 2021 20 2

1 2000 4 1 1 2 2000 55 7 7 3 2019 47 3 3 154-61 4 2018 41 ^s1 ^s1 1 200-2 5 2018 65 1 1 41-8 6 2018 10 6 6 7 2016 18 3 3 8 2016 39 1 1 64-70 9 2012 59 8 8 436-43 10 2017 28 5 5 691-700 11 2018