1. Department of Rheumatology, Maasstad Hospital, Rotterdam, The Netherlands
2. Department of Rheumatology, Albert Schweitzer Hospital, Dordrecht, The Netherlands
3. Medical Center Molenaar, Oud-Beijerland, The Netherlands
4. Department of Rheumatology, Erasmus Medical Center, Rotterdam, The Netherlands
5. Health Technology Assessment, Erasmus University, Rotterdam, The Netherlands