1. Department of Neurology and German Center for Vertigo, Hospital of the LMU Munich, Germany
2. Department of Neurology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seoul, South Korea
3. Department of Otolaryngology, Teikyo University School of Medicine, Mizonokuchi Hospital Kawasaki, Japan
4. Department of Neurology, University Hospital Zurich, University of Zurich, Switzerland
5. Department of Neurology and Neurobiology, University of California, Los Angeles, USA
6. Department of Neurology, Royal Prince Alfred Hospital and Central Clinical School, University of Sydney, Camperdown, Sydney, Australia
7. Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University, Baltimore, USA
8. Department of Otolaryngology, Maastricht, The Netherlands/Department of Medical Physics, Tomsk Research State University, Russian Federation