1. Department of Immunopathology, Sanquin Research, 1066 CX Amsterdam, Netherlands, and Landsteiner Laboratory, Academic Medical Centre, University of Amsterdam, Amsterdam, Netherlands.
2. Amsterdam Rheumatology and immunology Center, Reade, 1056 AB Amsterdam, Netherlands.
3. Amsterdam Rheumatology and Immunology Center, Amsterdam UMC, VU University Medical Center, 1081 HV Amsterdam, Netherlands.
4. Amsterdam Rheumatology and Immunology Center, Amsterdam UMC, Academic Medical Center, 1105 AZ Amsterdam, Netherlands.
5. Department of Epidemiology and Biostatistics, VU University Medical Center, 1081 HV Amsterdam, Netherlands.
6. Pfizer Inc., Collegeville, PA 19426, USA.
7. St. John’s Institute of Dermatology, Division of Genetics and Molecular Medicine, Kings College London, SE1 9RT London, UK.