1. Professor, Department of Rheumatology, University Hospital Utrecht, The Netherlands
2. Rheumatologist, Hospital Medisch Spectrum Twente, The Netherlands
3. Research Fellow, Department of Rheumatology, University Hospital Utrecht, The Netherlands
4. Rheumatologist (retired), Arnhem, The Netherlands
5. Rehabilitation Specialist, University Hospital Groningen, The Netherlands
6. Rheumatologist, Hospital Medisch Centrum Leeuwarden, The Netherlands
7. Rheumatologist, University Hospital Groningen, The Netherlands
8. Rheumatologists, Department of Rheumatology, University Hospital Utrecht, The Netherlands