title: Serum gastrin levels following upper gastrointestinal endoscopy.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004384:Duodenoscopy; D004945:Esophagoscopy; D005260:Female; D005755:Gastrins / Q000097:blood*; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D013270:Stomach / Q000601:surgery
chemical_list: D005755:Gastrins