title: Letter: Fasting serum-gastrin in chronic gastritis.
mesh_terms: D000328:Adult; D000368:Aged; D002908:Chronic Disease; D005215:Fasting; D005755:Gastrins / Q000097:blood*; D005756:Gastritis / Q000097:blood* / Q000175:diagnosis; D006801:Humans; D008875:Middle Aged
chemical_list: D005755:Gastrins