1. Department of Medicine, Hôtel Dieu de France, University Medical Center, Saint-Joseph University, P.O. Box 16683, Achrafieh, Lebanon
2. Division of Orthopedic Surgery, Department of Surgery, Bellevue Medical Center, Saint-Joseph University, P.O. Box 16683, Achrafieh, Lebanon
3. Division of Orthopedic Surgery, Department of Surgery, Bellevue Medical Center, Saint-Joseph University, P.O. Box 295, Mansourieh, Metn, Lebanon
4. Bellevue Medical Center, Saint-Joseph University, P.O. Box 295, Mansourieh, Metn, Lebanon