title: Preoperative prediction of postoperative deep-vein thrombosis.
mesh_terms: D006493:Heparin / Q000008:administration & dosage; D006801:Humans; D011183:Postoperative Complications; D011300:Preoperative Care; D013924:Thrombophlebitis / Q000175:diagnosis* / Q000209:etiology
chemical_list: D006493:Heparin