1. Department of Endocrinology, Oslo University Hospital, Oslo, Norway
2. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
3. Department of Radiology, Oslo University Hospital, Oslo, Norway
4. Department of Radiology, Diakonhjemmet Hospital, Oslo Norway
5. Department of Neurosurgery, Oslo University Hospital, Oslo, Norway
6. Department of Geriatrics and Internal medicine, Sorlandet Hospital, Arendal, Norway