Pergel, Ahmet, Ahmet Fikret Yucel, A. Serdar Karaca, Ibrahim Aydin, and Dursun Ali Sahin. 2021. “A Rare Cause of Ileus: Gallstone Ileus”. Annals of Medical Research 17 (4):0395-97. http://annalsmedres.org/index.php/aomr/article/view/3498.