Absence of thromboembolic complications in patients with hereditary bleeding disorders undergoing major orthopaedic surgery without antithrombotic prophylaxis - Franchini, Massimo; Tagliaferri, Annarita; Rossetti, Gina; Pattacini, Corrado; Pozzoli, Donatella; Lorenz, Claudio; Gandini, Giorgio (Thrombosis and Haemostasis, 2004)