100
Participants
Start Date
July 1, 2022
Primary Completion Date
September 1, 2024
Study Completion Date
June 1, 2025
Vitamin B2 labeling
Using medical non-toxic fluorescent agents, VB2 solution, to mark the patient's hands before endoscopy examination.
RECRUITING
Peking Union Medical College Hospital, Beijing
Tsinghua University
OTHER
Peking Union Medical College Hospital
OTHER