1. Departments of Neurosurgery and
2. Department of Neurosurgery, Medical Center of Central Georgia, Mercer University, School of Medicine, Macon, Georgia
3. Diagnostic Radiology, University Hospital of Larisa, University of Thessaly, School of Medicine, Larisa;
4. Department of Neurology, Medical College of Georgia, Augusta and
5. Department of Ophthalmology, Attiko General Hospital of Athens, University of Athens, Greece;