1. ENT, Audiology and Phoniatrics Unit, Department of Neuroscience and Rehabilitation, University Hospital of Ferrara, Ferrara, Italy
2. Otolaryngology Unit, San Feliciano Hospital, Rome, Italy
3. Otolaryngology Unit, Koelliker Hospital, Turin, Italy
4. Audiology and Phoniatrics Unit, Department of Neuroscience DNS, University of Padua, Ca’ Foncello Hospital, Treviso, Italy
5. Laboratorio della Voce e del Linguaggio, Ravenna, Italy