0864-0319 0864-0319 S0864-03192020000200003 Brasil Brasil 00 06 2020 00 06 2020 36 2 1 2020 7 3 3 228-9 2 2020 11 2 2 3 2013 21 4 4 427-33 4 2016 28 312-4 5 World Health Organization 2020