1981-5271 1981-5271 S1981-52712021000500601 10.1590/1981-5271v45.4-20210350.ing Brazil 00 00 2021 00 00 2021 45 4 1 WHO 2019 2 2020 396 10250 10250 523-4 3 2020 102 6 6 1164-5 4 IBGE