1. Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
2. Department of Pathology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
3. Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
4. Department of Orthopaedic Surgery, Clinic of Orthopaedics, Rheumatology and Dermatology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
5. Institute of Medical Science, University of Bergen, Bergen, Norway
6. Department of Dermatology, Haukeland University Hospital, Bergen, Norway
7. Department of Dermatology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway