title: Postoperative deep venous thrombosis. A comparison of diagnostic techniques.
mesh_terms: D005268:Femoral Vein; D005340:Fibrinogen; D006801:Humans; D007084:Iliac Vein; D007457:Iodine Radioisotopes; D008875:Middle Aged; D010690:Phlebography; D011152:Popliteal Vein; D011183:Postoperative Complications / Q000175:diagnosis*; D011300:Preoperative Care; D011877:Radionuclide Imaging; D013924:Thrombophlebitis / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014463:Ultrasonography
chemical_list: D007457:Iodine Radioisotopes; D005340:Fibrinogen