1. Medical Department I, Rheumatology, and Clinical Immunology Christian‐Albrecht University of Kiel and University Medical Center Schleswig‐Holstein Campus Kiel Kiel Germany
2. Institute for Infection Medicine Christian‐Albrecht University of Kiel and University Medical Center Schleswig‐Holstein Kiel Germany
3. Labor Dr. Krause und Kollegen MVZ GmbH Kiel Germany
4. Department of Rheumatology Endokrinologikum‐Gruppe Berlin Germany
5. Department of Pediatrics Christian‐Albrecht University of Kiel and University Medical Center Schleswig‐Holstein Campus Kiel Kiel Germany
6. Department for Dermatology Christian‐Albrecht University of Kiel and University Medical Center Schleswig‐Holstein Campus Kiel Kiel Germany
7. Institute of Clinical Molecular Biology Christian‐Albrecht University of Kiel Kiel Germany
8. Department for Internal Medicine I Christian‐Albrecht University of Kiel and University Medical Center Schleswig‐Holstein Campus Kiel