title: Gastric secretion in duodenitis.
mesh_terms: D000328:Adult; D000368:Aged; D004382:Duodenitis / Q000503:physiopathology*; D005260:Female; D005744:Gastric Acid / Q000378:metabolism*; D005750:Gastric Juice / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged