1. Norwegian National Advisory Unit on Vestibular Disorders, Department of Otorhinolaryngology & Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway;
2. Department of Clinical Medicine, University of Bergen, Bergen, Norway;
3. Department of Physical Medicine and Rehabilitation, The Outpatient Spine Clinic, Haukeland University Hospital, Bergen, Norway;
4. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway;
5. Department of Physical Therapy, Haukeland University Hospital, Bergen, Norway