Seroprevalence of SARS-CoV-2 in healthcare workers from outpatient facilities and retirement or nursing homes in a Swiss canton. Swiss Medical Weekly, [S. l.], v. 151, n. 3334, p. w30021, 2021. DOI: 10.4414/SMW.2021.w30021. Disponível em: https://www.smw.ch/index.php/smw/article/view/3055. Acesso em: 14 oct. 2025.