| Affiliation: | 1. Department of Public Health and Clinical Medicine/Rheumatology, Umeå University, 901 87 Umeå, Sweden;2. Wallenberg Centre for Molecular Medicine (WCMM), Umeå University, Umeå, Sweden;3. Center for Rheumatology, Academic Specialist Center, Stockholm Health Services, Box 6357, Stockholm 102 35, Sweden;1. Cincinnati Children’s Medical Center and University of Cincinnati, Johns Hopkins University, 3333 Burnet Avenue, MLC 4010, Cincinnati, OH 45229, USA;2. Department of Pediatrics, Johns Hopkins University, Baltimore, Maryland, USA |
