title: Letters: Heparin and venous thrombosis.
mesh_terms: D006493:Heparin / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D007279:Injections, Subcutaneous; D011183:Postoperative Complications / Q000517:prevention & control; D013923:Thromboembolism / Q000517:prevention & control*
chemical_list: D006493:Heparin