Hassan, K., A. Khakhiashvili, M. Awawdeh, I. Afraimovitch, S. Hasan, and B. Kristal. “Unusual Presentation of Gallstones”. Journal of Gastrointestinal and Liver Diseases, vol. 14, no. 2, June 2005, pp. 173-5, https://www.jgld.ro/jgld/index.php/jgld/article/view/2005.2.12.