660
Participants
Start Date
June 30, 2015
Primary Completion Date
May 31, 2016
Study Completion Date
July 31, 2016
Colonoscopist only
Only Colonosopist Observe during Colonoscopy (single observer)
Experienced Endoscopy Nurse Participation
Experienced Endoscopy Nurse Participation Observation during Colonoscopy (Both endoscopist and endoscopic nurse observe)
Ningbo NO.1 hospital, Ningbo
Ningbo No. 1 Hospital
OTHER