1. Department of Otorhinolaryngology and Head and Neck Surgery, ‘Sf. Spiridon’ Clinical Hospital, 700111 Iasi, Romania
2. Department of Otorhinolaryngology and Head and Neck Surgery, ‘Prof. Dr. D. Hociota’ Institute of Phonoaudiology and Functional ENT Surgery, 061344 Bucharest, Romania
3. Department of Plastic and Reconstructive Surgery, ‘Sf. Spiridon’ Clinical Hospital, 700111 Iasi, Romania
4. Department of Otorhinolaryngology and Head and Neck Surgery, Dolj County Hospital, 200349 Craiova, Romania
5. Department of Surgery, ‘Elias’ Emergency University Hospital, 011461 Bucharest, Romania
6. Doctoral School, Faculty of Medicine, ‘Ovidius’ University, 900527 Constanta, Romania
7. Faculty of Medicine and Pharmacy, University of Oradea, 411073 Oradea, Romania