0864-3466 0864-3466 S0864-34662021000400004 Cuba 00 12 2021 00 12 2021 47 4

1 2013 51 1 1 27-39 2 2012 50 3 3 320-9 3 2017 96 6 6 1153-63 4 2013 revisi 5 2015 32 3 3 464-70 6 2018 42 7 2017 43 2 2 8 2015 41 ^s1 ^s1 1 9 2015 41 ^s1 ^s1 1 10 2016 38 6 6 11 2015 41 ^s1 ^s1 1