1. Norwegian National Advisory Unit on Vestibular Disorders, Department of Otorhinolaryngology and Head and Neck SurgeryHaukeland University Hospital Bergen Norway
2. Department of Clinical MedicineUniversity of Bergen Bergen Norway
3. Department of Physical Medicine and Rehabilitation, The Outpatient Spine ClinicHaukeland University Hospital Bergen Norway
4. Department of Global Public Health and Primary CareUniversity of Bergen Bergen Norway
5. Department of Physical Therapy, The Outpatient Spine ClinicHaukeland University Hospital Bergen Norway