Affiliation: | 1. Department of Head and Neck Surgery, University Hospital for Tumors, Zagreb, Croatia;2. Department of Clinical Pathology, University Hospital for Tumors, Zagreb, Croatia;3. Department of Oncology, Zagreb University Hospital Center, Zagreb, Croatia;4. Institute of Surgical Research, Basel University Hospital, Basel, Switzerland;5. Department of Otorhinolaryngology and Cervicofacial Surgery, University Hospital “Sisters of Mercy”, Zagreb, Croatia |