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