1. Department of Neurosurgery
2. Department of Orthopedic Surgery
3. Department of Anesthesia and Intensive Care
4. Department of Physical Medicine and Rehabilitation
5. Department of Neurorehabilitation, Faculty of Physical Therapy, Cairo University, Cairo, Egypt;
6. Department of Neurology, Ain Shams University, Cairo, Egypt
7. Ain Shams University, Cairo, Egypt