1. Department of Neuroscience, Bioacoustics Research Laboratory; University of Padua; 35129 Padua Italy
2. Department of Chemistry and Pharmaceutical Sciences; University of Ferrara; 44121 Ferrara Italy
3. MED-EL Hearing Implants; Innsbruck A6020 Austria
4. Department of Neurosciences, ENT and Otosurgery Unit; University of Padua; 35129 Padua Italy