Giansante, C.; Stivanello, E.; Perlangeli, V.; Ferretti, F.; Marzaroli, P.; Musti, M. A.; Pizzi, L.; Resi, D.; Saraceni, S.; Pandolfi, P. COVID-19 Vaccine Effectiveness Among the Staff of the Bologna Health Trust, Italy, December 2020-April 2021. Acta Biomed 2021, 92 (4), e2021270. https://doi.org/10.23750/abm.v92i4.11896.