0864-2176 0864-2176 S0864-21762020000400018 Cuba 00 12 2020 00 12 2020 33 4 1 2017 66 104-10 2 2016 6 32352 32352 1-6 3 2015 125 1 1 167-70 4 2017 42 11 11 1413-9 5 2015 49 17-45 6 2020