title: Letter: Timed-release aspirin.
mesh_terms: D001241:Aspirin / Q000008:administration & dosage / Q000009:adverse effects*; D003692:Delayed-Action Preparations; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced*; D006801:Humans
chemical_list: D003692:Delayed-Action Preparations; D001241:Aspirin