Bozdag, A., Kutluer, N., Gulturk, B., Aksu, A., Bugra Bozan, M., Nur Gonen, A. and Boyuk, A. 2021. A rare cause of mechanical intestinal obstruction in geriatric population: Gallstone ileus three cases . Annals of Medical Research. 26, 1 (May 2021), 0117–0120.