1. Academic Department of Neuro-Otology, Division of Brain Sciences, Charing Cross Hospital Campus, Imperial College London, Fulham Palace Road, London, UK
2. Department of Neurology, University Hospital Basel, Petersgraben 4, Basel, Switzerland
3. Department of Neurology, Hospital das Clinicas da Faculdade de Medicina de Rebeirao Preto-USP, Campus Universitario s/n Riberao Preto, Sao Paulo, Brazil
4. Department of Psychology, School of Social Sciences, University of Westminster, 115 New Cavendish Street, London, UK
5. Department of Neuro-otology, Royal National Throat Nose and Ear Hospital, University College London, London, UK