Department of Gastroenterology The Central Hospital of Wuhan Tongji Medical College Huazhong University of Science and Technology Wuhan 430014 Hubei Province China;
Department of Gastroenterology The Central Hospital of Wuhan Tongji Medical College Huazhong University of Science and Technology Wuhan 430014 Hubei Province China;
Department of Gastroenterology The Central Hospital of Wuhan Tongji Medical College Huazhong University of Science and Technology Wuhan 430014 Hubei Province China;
Department of Gastroenterology The Central Hospital of Wuhan Tongji Medical College Huazhong University of Science and Technology Wuhan 430014 Hubei Province China;
Department of Gastroenterology The Central Hospital of Wuhan Tongji Medical College Huazhong University of Science and Technology Wuhan 430014 Hubei Province ChinaDepartment of Gastroenterology The Eighth Hospital of Wuhan Wuhan 430014 Hubei Province China;
Antifoaming agent; Simethicone; Polyethylene glycol; Colonoscopy; Metaanalysis;