title: Haemorrhage and low-dose heparin.
mesh_terms: D005069:Evaluation Studies as Topic; D006470:Hemorrhage / Q000517:prevention & control*; D006493:Heparin / Q000008:administration & dosage* / Q000627:therapeutic use; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control*; D011655:Pulmonary Embolism / Q000517:prevention & control
chemical_list: D006493:Heparin