1. Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
2. Department of Orthopedics, Rehabilitation Medicine and Physical Therapy, Leiden University Medical Center, Leiden, The Netherlands
3. Department of Physical Therapy, Leiden University Medical Center, Leiden, The Netherlands
4. Department of Rheumatology, Sint Maartenskliniek, Nijmegen, The Netherlands
5. Department of Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands
6. Department of Physical Therapy, HagaZiekenhuis, The Hague, The Netherlands
7. NVLE, Dutch Patient Organization for Systemic Autoimmune Diseases, Utrecht, The Netherlands
8. Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands