1. From the Department of Radiology, Ankara Atatürk Training and Research Hospital, Ankara, Turkey

2. From the Departments of Radiology, Ministry of Health Ankara Atatürk Education and Research Hospital, Ankara, Turkey

3. From the Departments of Pathology, Ministry of Health Ankara Atatürk Education and Research Hospital, Ankara, Turkey

4. From the Departments of Neurosurgery, Ministry of Health Ankara Atatürk Education and Research Hospital, Ankara, Turkey