1. Department of Dermatology, Radboudumc, Nijmegen René Descartesdreef 1, Nijmegen, Netherlands
2. Department of Hospital Pharmacy, Academic Medical Center, Amsterdam, Netherlands
3. Department for Health Evidence, Radboud Institute for Health Sciences, Radboudumc, Nijmegen, Netherlands
4. Department of Dermatology, Ziekenhuis Groep Twente, Hengelo, Netherlands
5. Department of Dermatology, Sint Anna Ziekenhuis, Geldrop, Netherlands
6. Department of Dermatology, Ziekenhuis Groep Twente, Almelo, Netherlands
7. Department of Dermatology, Gelre Ziekenhuizen, Apeldoorn, Netherlands
8. Department of Dermatology, Slingelandziekenhuis, Doetinchem, Netherlands
9. Biologics Lab, Bioanalysis, Sanquin Diagnostic Services, Amsterdam, Netherlands
10. Department of Rheumatology, Sint Maartenskliniek, Nijmegen, Netherlands
11. Radboud University, Nijmegen, Netherlands