1. Dermatology and Venereology Unit Department of Medicine, Solna Karolinska Institutet Stockholm Sweden
2. Dermato‐Venereology Clinic Karolinska University Hospital Stockholm Sweden
3. Department of Clinical Pathology and Cytology Karolinska University Hospital Stockholm Sweden
4. Department of Oncology and Pathology (OnkPat) Karolinska Institutet Stockholm Sweden
5. Division of Rheumatology Department of Medicine, Solna Karolinska Institutet Stockholm Sweden