TY - BOOK TI - Clinical Endoscopy SN - 2234-2443 CY - Korea, Republic of KW - Diseases of the digestive system. Gastroenterology KW - Internal medicine KW - Specialties of internal medicine KW - Medicine UR - https://doaj.org/toc/7ca58c5dfb2d4bd593a0e41d90420e8a ER -