1. Department of Orthopaedic Surgery and Traumatology, Begin Military Teaching Hospital, Saint-Mandé, France
2. Department of Epidemiology and Public Health, Camp de Sainte Marthe, Marseille, France
3. Department of Orthopaedic, Traumatology and Reconstructive surgery, Percy Military Teaching Hospital, Clamart, France
4. Department of Surgery, French Military Health Service Academy, Ecole du-Val-de-Grâce, Paris, France