A. D'Introno, P. Gatti, G. Manca, A. D'Amuri, S. Minniti, and E. Ciracì, “Acute acalculous cholecystitis as an early manifestation of COVID-19: case report and literature review”., Acta Biomed, vol. 93, no. S1, p. e2022207, Jun. 2022, doi: 10.23750/abm.v93iS1.12760.