0036-3634 0036-3634 S0036-36342021000300329 10.21149/11825 Mexico Mexico Mexico Mexico Mexico 00 07 2021 00 07 2021 63 3 329 330 World Health Organization 2020 2019 11 1 1 41 2020 395 10229 10229 1063-77 2020 21 3 3 335-7 2020 21 4 4 2019 33 844-62 2018 36 30 30 3043-54 2020 190 2 2 e67-70 2020 26 11 11 1983-94