Brollo, Pier Paolo, Davide Muschitiello, Giacomo Calini, Rosanna Quattrin, and Vittorio Bresadola. 2021. “Cholecystectomy in the Elderly: Clinical Outcomes and Risk Factors”. Annali Italiani Di Chirurgia 92 (2):160-67. https://annaliitalianidichirurgia.it/index.php/aic/article/view/2331.