D'Introno, A. et al. 2022. Acute acalculous cholecystitis as an early manifestation of COVID-19: case report and literature review. Acta Biomedica Atenei Parmensis. 93, S1 (Jun. 2022), e2022207. DOI:https://doi.org/10.23750/abm.v93iS1.12760.