0375-0760 0375-0760 S0375-07602021000200014 Cuba 00 08 2021 00 08 2021 73 2 1 WHO 2020 2 2020 25 3 3 3 2020 4 OPS 2020 5 2020 6 2021 59 2 2 e02589-20 7 2021 8 2021 70 3 3 100-5