：耿伟

诊所 消化内科主治医师 魏玮 审核  

[1] Jonathan Cohen.MD, David A,ect Overview of upper gastrointestinal endoscopy (esophagogastroduodenoscopy). Uptodate 临床顾问. https://www.uptodate.com/contents/overview-of-upper-gastrointestinal-endoscopy-esophagogastroduodenoscopy. (Assessed on May 20th;2020）

[2] Mark Feldman, MD, MACP, AGAF,ect, Gastritis: etology and diagnosis. Uptodate 临床顾问. https://www.uptodate.com/contents/gastritis-etiology-and-diagnosis. (Assessed on March 2nd;2020）

[3] Pamela J, Jensen, MD, Mark Feldman, ect, Metaplastic (chronic ) atrophic gastritis. Uptodate 临床顾问. https://www.uptodate.com/contents/metaplastic-chronic-atrophic-gastritis.( Assessed on June 13th;2019）