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Prolonged thromboprophylaxis in patients undergoing major abdominal surgery decreases the risk of venous thromboembolism Commentary to the article: Rasmussen MS, Jorgensen LN, Wille-Jørgensen P, Nielsen JD, Horn A, Mohn AC, Sømod L, Olsen B; FAME Investigators: Prolonged prophylaxis with dalteparin to prevent late thromboembolic complications in patients undergoing major abdominal surgery: a multicenter randomized open-label study. J Thromb Haemost 2006; 4: 2384–2390.