TY - BOOK TI - Endoscopy International Open SN - 2196-9736 CY - Germany KW - Diseases of the digestive system. Gastroenterology KW - Internal medicine KW - Specialties of internal medicine KW - Medicine UR - https://doaj.org/toc/0ec14d6240394e7d90bfe7f8feb057d8 ER -