1. “Prof. Dr. D. Hociota” Institute of Phono-Audiology and Functional ENT Surgery , Bucharest , Romania
2. Faculty of Medicine , “Carol Davila” University of Medicine and Pharmacy , Bucharest , Romania
3. Floreasca Emergency Clinical Hospital , Bucharest , Romania
4. Department of Morphological Sciences, Discipline of Anatomy , “Carol Davila” University for Medicine and Pharmacy , Bucharest , Romania