Spaziani, Erasmo, Annalisa Di Filippo, Marcello Picchio, Piero Lucarelli, Giada Pattaro, Francesco De Angelis, Piero Francioni, et al. 2013. “Prevalence of Adenoma of Gallbladder, Ultrasonographic and Histological Assessment in a Retrospective Series of 450 Cholecystectomy”. Annali Italiani Di Chirurgia 84 (2):159-64. https://annaliitalianidichirurgia.it/index.php/aic/article/view/1779.