0864-3466 0864-3466 S0864-34662022000200018 Cuba Cuba 00 06 2022 00 06 2022 48 2 1 2021 47 4 4 2 2020 44 2 2 223-31 3 2021 39 3 3 466-9 4 2021 11 4 4 496-500 5 2021 2021 1-3 6 2021