title: Letter: The urokinase-pulmonary embolism trial.
mesh_terms: D005343:Fibrinolytic Agents / Q000627:therapeutic use*; D006493:Heparin / Q000009:adverse effects / Q000627:therapeutic use; D006801:Humans; D011655:Pulmonary Embolism / Q000188:drug therapy*; D013923:Thromboembolism
chemical_list: D005343:Fibrinolytic Agents; D006493:Heparin