title: A cooperative study of polycythemia vera.
mesh_terms: D001241:Aspirin / Q000627:therapeutic use; D002699:Chlorambucil / Q000627:therapeutic use; D004176:Dipyridamole / Q000627:therapeutic use; D006801:Humans; D007938:Leukemia / Q000453:epidemiology; D011087:Polycythemia Vera / Q000150:complications / Q000628:therapy*; D011379:Prognosis
chemical_list: D002699:Chlorambucil; D004176:Dipyridamole; D001241:Aspirin