1. Department 12-Otorhynolaryngology, Ophtalmology, Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
2. Department of ENT, Head and Neck Surgery, Colţea Clinical Hospital, 030167 Bucharest, Romania
3. Department of General Surgery, Colţea Clinical Hospital, 030167 Bucharest, Romania
4. Department of ENT, Head and Neck Surgery, “Carol Davila” Emergency Central Military Hospital, 010825 Bucharest, Romania