1 Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands; Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands; Department of Dermatology, Radboud University Medical Center, Nijmegen, The Netherlands.
2 Department of Dermatology, Radboud University Medical Center, Nijmegen, The Netherlands; Radboud University, Nijmegen, The Netherlands.
3 Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands; Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.
4 Department of Dermatology, Radboud University Medical Center, Nijmegen, The Netherlands.
5 Department of Paediatric Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands.
6 Department of Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands.
7 Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.
8 Department of Paediatric Rheumatology, University Medical Center Utrecht, Utrecht, The Netherlands.
9 Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands; Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands. Electronic address: T.R.D.J.Radstake@umcutrecht.nl.