title: Letter: Low-dose heparin.
mesh_terms: D000328:Adult; D000991:Antithrombins / Q000032:analysis; D001161:Arteriosclerosis / Q000097:blood; D001780:Blood Coagulation Tests; D001792:Blood Platelets; D002986:Clinical Trials as Topic; D006493:Heparin / Q000008:administration & dosage*; D006494:Heparin Antagonists / Q000032:analysis; D006615:Hip / Q000601:surgery; D006801:Humans; D007279:Injections, Subcutaneous; D007595:Joint Prosthesis; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery; D011183:Postoperative Complications / Q000517:prevention & control*; D011655:Pulmonary Embolism / Q000517:prevention & control; D011863:Radioimmunoassay; D013924:Thrombophlebitis / Q000175:diagnosis / Q000517:prevention & control*
chemical_list: D000991:Antithrombins; D006494:Heparin Antagonists; D006493:Heparin