1. Department of Dermatology, Odense University Hospital, Odense, Denmark
2. Department of Dermatology, Bispebjerg Hospital, Copenhagen University Hospital, Copenhagen, Denmark
3. Department of Autoimmunology and Biomarkers, Statens Serum Institut, Copenhagen, Denmark
4. Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
5. Department of Rheumatology, Odense University Hospital, Odense, Denmark
6. Department of Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark