1. Department of Otorhinolaryngology and Head & Neck Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
2. Clinique du Vertige, Centre Hospitalier Emile Mayrisch, Esch-sur-Alzette, Luxembourg
3. Department of Neurology, Krankenhaus Lindenbrunn, Coppenbrügge, Germany
4. Medical Faculty, University of Münster, Münster, Germany
5. Department of Otolaryngology, University pediatric hospital Robert Debré, Paris, France
6. Department of Otolaryngology, Head & Neck Surgery, Hospital for Sick Children, University of Toronto, Toronto, Canada
7. Division of Child and Adolescent Neurology, Mayo Clinic, Rochester, Minnesota, USA
8. Department of Neurology, Dizziness Center, Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine, South Korea
9. Department of Neurology, Schoen Clinic, Bad Aibling, Germany
10. German Center for Vertigo and Balance Disorders, Ludwig Maximilians University, Munich, Germany
11. Department of Neurology, Ludwig Maximilians University, Munich, Germany
12. Department Of Neurology, Schlosspark-Klinik, Berlin, Germany