Riccò, Matteo, Giovanni Gualerzi, Silvia Ranzieri, Simona Peruzzi, Marina Valente, Federico Marchesi, Nicola Luigi Bragazzi, and Carlo Signorelli. 2021. “Occurrence of SARS-CoV-2 Infection Among Healthcare Personnel: Results from an Early Systematic Review and Meta-Analysis”. Acta Biomedica Atenei Parmensis 92 (5): e2021311. https://doi.org/10.23750/abm.v92i5.10438.