1. Department of Neurology, Kaunas ClinicsHospital of Lithuanian University of Health SciencesKaunas Lithuania
2. Department of Clinical Sciences, Karolinska InstitutetStockholm Sweden
3. Department of Rehabilitation MedicineDanderyd University HospitalStockholm Sweden
4. Department of Medical and Health Sciences, Faculty of Medicine and Health SciencesLinköping University, Pain and Rehabilitation Centre, Anaesthetics, Operations and Specialty Surgery Centre, Region ÖstergotlandLinköping Sweden
5. Department of Clinical Science, Intervention and Technology (CLINTEC), Division of OtorhinolaryngologyKarolinska University HospitalStockholm Sweden