ROUGE ELTON, P. A.; SCHMITT, P. A.; FAOUZI, M.; ZIMMERMANN, P.; RITTER SCHENK, C. Seroprevalence of SARS-CoV-2 antibodies and associated risk factors in children less than 6 years of age in the canton of Fribourg, Switzerland (COVPED study): a population-based cross-sectional study. Swiss Medical Weekly, [S. l.], v. 152, n. 2122, p. w30173, 2022. DOI: 10.4414/SMW.2022.w30173. Disponível em: Acesso em: 9 jun. 2023.