Respiratory protection masks: Reflections on the regulation and efficiency of the process in the COVID-19 pandemic. Research, Society and Development, [S. l.], v. 10, n. 8, p. e3310816805, 2021. DOI: 10.33448/rsd-v10i8.16805. Disponível em: https://rsdjournal.org/rsd/article/view/16805. Acesso em: 5 dec. 2025.