1. University of Ioannina,Unit of Medical Technology and Intelligent Information Systems,Department of Materials Science and Engineering,Ioannina,Greece
2. The Ear Institute, University College London,London,UK
3. Centre for Human and Applied Physiological Sciences, King’s College London,London,UK
4. National Kapodistrian University of Athens,‘Hippokrateio’ General Hospital,Department of Otolaryngology-Head and Neck Surgery,Athens,Greece
5. University of Freiburg,Department of Neurology,Freiburg,Germany