Eriksson BI, Lassen MR; PENTasaccharide in HIp-FRActure Surgery Plus Investigators. Duration of prophylaxis against venous thromboembolism with fondaparinux after hip fracture surgery: a multicenter, randomized, placebo-controlled, double-blind study. Arch Intern Med. 2003 Jun 09;163(11):1337–42. doi: 10.1001/archinte.163.11.1337. PMID: 12796070.
Duration of Prophylaxis Against Venous Thromboembolism With Fondaparinux After Hip Fracture SurgeryA Multicenter, Randomized, Placebo-Controlled, Double-blind Study