title: The natural history of venous thrombo-embolism.
mesh_terms: D005268:Femoral Vein; D006801:Humans; D007084:Iliac Vein; D007457:Iodine Radioisotopes; D007866:Leg; D010690:Phlebography; D011655:Pulmonary Embolism / Q000150:complications; D011877:Radionuclide Imaging; D013924:Thrombophlebitis / Q000150:complications / Q000175:diagnosis*
chemical_list: D007457:Iodine Radioisotopes