1. Department of Neurology; Ibn Sina Hospital; POB 25427 Safat 13115 Kuwait
2. Clinical Neurophysiology Department; Kasr El Aini Hospital, Cairo University; Cairo Egypt
3. Department of Radiology; Faculty of Medicine; Alexandria University; Alexandria Egypt
4. Department of Radiology; Al-Razi Orthopedic Hospital; Sulaibikhat Kuwait
5. Department of Orthopedics; Jaber-Al-Sabah Armed Forces Hospital; Subhan Kuwait
6. Department of Neurosciences; University Hospitals, Coventry and Warwickshire NHS Trust; Coventry UK