1. Departments of Psychiatry and Psychology and Otorhinolaryngology – Head and Neck Surgery, Mayo Clinic, Rochester, MN, USA
2. Department of Psychosomatic Medicine, Klinikum Stuttgart, Stuttgart, Germany
3. Department of Otorhinolaryngology, Niigata University, Niigata, Japan
4. Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA
5. Department of Neurology and German Center for Vertigo and Balance Disorders, University Hospital, LMU Munich, Germany
6. Neuro-Otology Unit, Division of Brain Sciences, Imperial College London, London, UK