0874-0283 0874-0283 S0874-02832023000100228 10.12707/rvi22091 Portugal Portugal Portugal 00 12 2023 00 12 2023 serVI 2

2021 29 29 2016 23 3 3 8-14 2020 48-56 2021 2019 22 22 09-18 2015 13 1 1 175-85 1974 30 1 1 159-65 2021 2 2 2 2016 29 1 1 24-30 1981 2 2 2 99-113 1996 3 2018 4 2016 194 1 1 106-13 2016 2021 2018 2021 2 2 2 2019 2020 3 World Health Organization 2022