1. College of Medicine & Health Science, National University of Science & Technology , P.O. Box 391, P.C 321 Sohar, Sultanate of Oman
2. College of Medicine and Health Sciences, Sultan Qaboos University , Al Koudh, Box 35 SQU, 123, Seeb, Oman
3. General Foundation Program of Neurosurgery , Oman Medical Speciality Board Way #4443, Bldg. 18, Block 244, Plot 404, North Azaiba, Muscat, Sultanate of Oman
4. Neurosurgery Department, Khoula Hospital , JG78+GQ3, Al Fahal St, Muscat, Oman
5. Department of General Surgery, Sohar Hospital , Sohar, Oman
6. Department of Neurosurgery, Montreal Neurological Institute-Hospital, McGill University , Montreal, QC H3A 2B4, Canada