Department of Gastroenterology, Renji Hospital, Shanghai Institute of Digestive Disease, Shanghai Second Medical University, Shanghai 200001, China;
Department of Gastroenterology, Renji Hospital, Shanghai Institute of Digestive Disease, Shanghai Second Medical University, Shanghai 200001, China;
Department of Gastroenterology, Renji Hospital, Shanghai Institute of Digestive Disease, Shanghai Second Medical University, Shanghai 200001, China;
capsule endoscopy; push enteroscopy; obscure gastrointestinal bleeding;