YILMAZ, Uğur, Tülin ŞAHİN, Aysel ÜLKER, Musa AKOĞLU, Mehmet ŞENGÖR, and Perihan OĞUZ. 1993. “THE SUBCUTANEOUS EMPHYSEMA AND RETROPERITONEAL PERFORATION CAUSED BY ENDOSCOPIC SPHINCTEROTOMY”. Turkish Journal of Gastroenterology 4 (1):246-48. https://www.turkjgastroenterol.org/index.php/tjg/article/view/214.