Pergel, Ahmet, Ahmet Fikret Yucel, A. Serdar Karaca, Ibrahim Aydin, and Dursun Ali Sahin. “A Rare Cause of Ileus: Gallstone Ileus ”. Annals of Medical Research 17, no. 4 (May 25, 2021): 0395–0397. Accessed September 16, 2026. http://www.annalsmedres.org/index.php/aomr/article/view/3498.