1. Department of Neurosurgery, Dubrava University Hospital,
2. Primary respiratory intensive care centre, Dubrava University Hospital,
3. Department of Diagnostic and Interventional Radiology, Dubrava University Hospital,
4. Department of Surgery, Dubrava University Hospital, University of Zagreb School of Medicine,
5. Department of Maxillofacial Surgery, Dubrava University Hospital, University of Zagreb School of Medicine,
6. Catholic University of Croatia, School of Medicine, Zagreb, Croatia.