1. Department of Otorhinolaryngology, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico; (I.R.C.C.S.) Policlinico San Matteo; University of Pavia; Italy
2. Department of Neurosurgery, Fondazione I.R.C.C.S. Policlinico San Matteo; University of Pavia; Pavia Italy
3. General Biology and Medical Genetics, Department of Molecular Medicine; University of Pavia; Pavia Italy