1. Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy
2. Centro di Audiofonologopedia, 00199 Roma, Italy
3. Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
4. European Hospital, 00149 Rome, Italy
5. Department of Otolaryngology, San Salvatore Hospital, 67100 L’Aquila, Italy