The use of masks among brazilian nursing workers during the COVID-19 pandemic - Ávila, Fernanda Maria Vieira Pereira; Martins Junior, Adijalme; Sousa, Laelson Rochelle Milanês; Moll, Marciana Fernandes; Galvão, Marli Teresinha Gimeniz; Toffano, Silmara Elaine Malaguti; Lam, Simon Ching (Texto & Contexto Enfermagem, 2021)