Affiliation: | 1.Copenhagen Center for Arthritis Research and Center for Rheumatology, Spine Diseases, Rigshospitalet-Glostrup, Copenhagen, Denmark ;2.Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark ;3.Center for Rheumatology and Spinal Diseases, Copenhagen University Hospital, Rigshsopitalet, Nordre Ringvej 57, 2600, Glostrup, Copenhagen, Denmark ;4.Department of Rheumatology, Diakonhjemmet, Oslo, Norway ; |