TAYLOR, R.; OPARA, N.; SIMMERMAN, T. Gallstone Ileus with Cholecystogastric Fistula in an Older Female . European Journal of Case Reports in Internal Medicine, [S. l.], v. 9, n. 4, 2022. DOI: 10.12890/2022_003345. Disponível em: https://www.ejcrim.com/index.php/EJCRIM/article/view/3345. Acesso em: 6 may. 2024.