1. Department of Neurosurgery, Saint Lucas Clinic, AHEPA University Hospital, Thessaloniki, Macedonia, Greece
2. Department of Neurosurgery, Saint Lucas Clinic, and Departments of Pathology, AHEPA University Hospital, Thessaloniki, Macedonia, Greece
3. Department of Neurosurgery, Saint Lucas Clinic, and Departments of Pathology and Internal Medicine, AHEPA University Hospital, Thessaloniki, Macedonia, Greece