De Santi, Mauro, Aurora Diotallevi, and Giorgio Brandi. “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, no. 1 (January 25, 2021): e2021070. Accessed July 5, 2025. https://mattioli1885journals.com/index.php/actabiomedica/article/view/10847.