1.
Petracca G, Ruggiero M, Zappia A, Lebrino C, Zappia F, Talarico C. Gallstone ileus of the sigmoid colon. Ann Ital Chir [Internet]. 2019 Mar. 28 [cited 2024 Sep. 13];8(March):1-4. Available from: https://annaliitalianidichirurgia.it/index.php/aic/article/view/1972