title: Gastric cancer--increased frequency in patients with achlorhydria.
mesh_terms: D000126:Achlorhydria / Q000150:complications* / Q000453:epidemiology; D000328:Adult; D000367:Age Factors; D000368:Aged; D002110:Caffeine / Q000494:pharmacology; D005260:Female; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000378:metabolism; D005753:Gastric Mucosa / Q000187:drug effects; D006801:Humans; D007475:Ion Exchange Resins; D008297:Male; D008722:Methods; D008875:Middle Aged; D013268:Stimulation, Chemical; D013274:Stomach Neoplasms / Q000150:complications* / Q000453:epidemiology
chemical_list: D007475:Ion Exchange Resins; D002110:Caffeine