title: Postoperative pulmonary embolism. A prospective study utilizing low dose heparin.
mesh_terms: D005340:Fibrinogen; D006493:Heparin / Q000627:therapeutic use*; D006801:Humans; D007457:Iodine Radioisotopes; D008173:Lung Diseases, Obstructive / Q000150:complications; D010690:Phlebography; D011183:Postoperative Complications; D011446:Prospective Studies; D011655:Pulmonary Embolism / Q000175:diagnosis / Q000209:etiology / Q000517:prevention & control*; D011877:Radionuclide Imaging; D013924:Thrombophlebitis / Q000175:diagnosis / Q000517:prevention & control
chemical_list: D007457:Iodine Radioisotopes; D005340:Fibrinogen; D006493:Heparin