1. Istanbul Physical Medicine and Rehabilitation Training and Research Hospital, Istanbul, Turkey
2. Selahhadin Eyyubi State Hospital, Diyarbakır, Turkey
3. Department of Orthopedic Surgery, Klinikum Esslingen, Esslingen am Neckar, Germany
4. Saygi Hospital, Istanbul, Turkey
5. Department of Physical Medicine and Rehabilitation, Istanbul University Faculty of Medicine, Istanbul, Turkey