title: Letter: Hazards of heparin therapy.
mesh_terms: D005342:Fibrinolysis / Q000187:drug effects; D006470:Hemorrhage / Q000139:chemically induced*; D006493:Heparin / Q000009:adverse effects*; D006801:Humans; D014656:Vascular Surgical Procedures
chemical_list: D006493:Heparin