1. Department of Neurosurgery, Cantonal Hospital Zenica, 72000 Zenica, Bosnia and Herzegovina
2. Department of Anatomy, School of Medicine, University of Zenica, 72000 Zenica, Bosnia and Herzegovina
3. Department of General Medicine, School of Medicine, University of Zenica, 72000 Zenica, Bosnia and Herzegovina
4. Department of Surgery, School of Medicine, University of Zenica, 72000 Zenica, Bosnia and Herzegovina
5. Clinic of Neurosurgery, University of Marburg, 35039 Marburg, Germany