168
Participants
Start Date
May 1, 2024
Primary Completion Date
December 31, 2024
Study Completion Date
June 30, 2025
White light endoscopy group
White light endoscopy observe the characteristics of mucosa under white light
Magnifying endoscopy group
NBI+ME to observe the non atrophic area of the gastric fundus gland. The results depend on the ratio of gastric fundus gland.
RECRUITING
the First Hospital of Jilin University, Changchun
Jilin University
OTHER