title: Serum pepsinogen levels in patients with gastric cancer.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010435:Pepsinogens / Q000097:blood*; D013274:Stomach Neoplasms / Q000097:blood*
chemical_list: D010435:Pepsinogens