​ Conditions: Colorectal Adenoma

Interventions: Device: standard second examination of the sigmoid colon; Device: transparent cap-assisted second examination of the sigmoid colon

Sponsors: Fudan University

Not yet recruiting Conditions: Colorectal Adenoma
Interventions: Device: standard second examination of the sigmoid colon; Device: transparent cap-assisted second examination of the sigmoid colon
Sponsors: Fudan University
Not yet recruiting