From the *Departments of Rheumatology and
†Dermatology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.
No funding was received for this article.
The authors declare no conflict of interest.
Correspondence: Helena M. van Dongen, MD, Department of Rheumatology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, the Netherlands. E-mail: email@example.com.