De Santi, M. et al. 2021. Seroprevalence of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) infection in an Italian cohort in Marche Region, Italy. Acta Biomedica Atenei Parmensis. 92, 1 (Jan. 2021), e2021070. DOI:https://doi.org/10.23750/abm.v92i1.10847.