1. Department of General Medicine, School of Medicine, Unversity of Zenica, Travnička 1, 72000 Zenica, Bosnia and Herzegovina
2. Department of Anatomy, School of Medicine, University of Zenica, Travnička 1, 72000 Zenica, Bosnia and Herzegovina
3. Department of General Medicine, Primary Health Care Center, Nikole Šubića Zrinjskog bb., 72260 Busovača, Bosnia and Herzegovina
4. Department of Neurosurgery, Cantonal Hospital Zenica, Crkvice 76, 72000 Zenica, Bosnia and Herzegovina
5. Department of Neurology, Cantonal Hospital Zenica, Crkvice 76, 72000 Zenica, Bosnia and Herzegovina
6. Department of Surgery, School of Medicine, University of Zenica, Travnička 1, 72000 Zenica, Bosnia and Herzegovina
7. Department of Histology, School of Medicine, University of Zenica, Travnička 1, 72000 Zenica, Bosnia and Herzegovina
8. Department of Pathology, School of Medicine, University of Zenica, Travnička 1, 72000 Zenica, Bosnia and Herzegovina
9. Department of Pathology, Cantonal Hospital Zenica, Crkvice 76, 72000 Zenica, Bosnia and Herzegovina
10. Department of Neurosurgery, University Hospital Marburg, Baldingerstr., 35033 Marburg, Germany