1. From the Department of Neurosurgery, College of Medicine and King Khalid University Hospital, Riyadh
2. Address reprint requests and correspondence to Dr. Z. Jamjoom: Division of Neurosurgery, Security Forces Hospital, P.O. Box 3643, Riyadh 11481, Saudi Arabia
3. From the Department of Endocrinology, College of Medicine and King Khalid University Hospital, Riyadh
4. From the Department of Radiology, College of Medicine and King Khalid University Hospital, Riyadh