title: Problems of persistent and occult bleeding from the gastrointestinal tract.
mesh_terms: D002908:Chronic Disease; D004240:Diverticulum / Q000150:complications; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000209:etiology*; D005770:Gastrointestinal Neoplasms / Q000150:complications; D030342:Genetic Diseases, Inborn / Q000150:complications; D006402:Hematologic Diseases / Q000150:complications; D006548:Hernia, Diaphragmatic / Q000150:complications; D006725:Hookworm Infections / Q000150:complications; D006801:Humans; D007046:Hysteria / Q000150:complications; D009780:Occult Blood; D012459:Salicylates / Q000009:adverse effects
chemical_list: D012459:Salicylates