1. Department of ENT, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
2. Department of Radiobiology and Tumor Biology, Prof. Dr. Ion Chiricuţă Oncology Institute, Cluj-Napoca, Romania
3. Department of ENT, Iuliu Haţieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania; Department of ENT, Emergency County Hospital, Cluj-Napoca, Romania
4. Department of ENT, Emergency County Hospital, Cluj-Napoca, Romania
5. Department of ENT, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
6. Department of ENT, University of Medicine and Pharmacy of Craiova, Romania