1. Department of Orthopedics and Traumatology, Mohamed Taher Maamouri Hospital, Nabeul, Tunisia
2. Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis, Tunisia
3. Department of Rheumatology, Mohamed Taher Maamouri Hospital, Nabeul, Tunisia
4. Department of Anesthesia and Intensive Care, Mohamed Bourguiba Hospital, Kef, Tunisia
5. Department of Orthopedics and Traumatology, Military Hospital of Instruction, Tunis, Tunisia