YILMAZ, U.; ŞAHİN, T.; ÜLKER, A.; AKOĞLU, M.; ŞENGÖR, M.; OĞUZ, P. THE SUBCUTANEOUS EMPHYSEMA AND RETROPERITONEAL PERFORATION CAUSED BY ENDOSCOPIC SPHINCTEROTOMY. Turkish Journal of Gastroenterology 1993, 4, 246-248.