0016-3813 0016-3813 S0016-38132021000100122 10.24875/gmm.20000642 Perú Perú 00 02 2021 00 02 2021 157 1 122 122 1 World Health Organization [Internet] 2020 2 2020 3 2020 37 393-5 4 2020 5 RECOVERY Collaborative Group 2021 384 693-704