GIANSANTE, Chiara et al. COVID-19 vaccine effectiveness among the staff of the Bologna Health Trust, Italy, December 2020-April 2021. Acta Biomedica Atenei Parmensis, Fidenza, Italy, v. 92, n. 4, p. e2021270, 2021. DOI: 10.23750/abm.v92i4.11896. Disponível em: https://mattioli1885journals.com/index.php/actabiomedica/article/view/11896.. Acesso em: 17 aug. 2024.