392
Participants
Start Date
September 1, 2018
Primary Completion Date
May 31, 2019
Study Completion Date
June 30, 2019
Second Examination
The colonoscopy is passed to the cecum and then withdrawn to hepatic flexure. Then, the scopy is inserted to the cecum and withdrawn to hepatic flexure again for second foreard view examination.
Ningbo NO.1 hospital, Ningbo
Ningbo No. 1 Hospital
OTHER