1. Department of Orthopedic Surgery and Traumatology, Saint Georges University Medical Center, Balamand University, P.O. Box 166378, Achrafieh, Beirut 1100 2807, Lebanon
2. Faculty of Medicine, University Saint Joseph, P.O. Box 17-5208, Mar Mikhael, Beirut, Lebanon
3. Department of Orthopedic Surgery and Traumatology, Clemenceau Medical Center Affiliated with Johns Hopkins International, Clemenceau Beirut, Lebanon