171
Participants
Start Date
July 20, 2018
Primary Completion Date
July 20, 2018
Study Completion Date
July 20, 2018
Cap-EGD
Undergoing cap-assisted endoscopy
Duo
Undergoing side-viewing duodenoscope
Department of gastroenterology, Second Affiliated Hospital of Chongqing Medical University, Chongqing
Endoscopic center, Xijing Hospital of Digestive Diseases, Xi'an
Air Force Military Medical University, China
OTHER