1. a Department of Communication Studies, Faculty of Philosophy and Social Sciences , University of Twente , Postbus 217, 7500 AE, Enschede, The Netherlands
2. b Department of Rheumatology , Medisch Spectrum Twente , Enschede, The Netherlands
3. c Department of Rheumatology , Medisch Centrum Leeuwarden , The Netherlands
4. d Department of Rheumatology , St. Franciscus Gasthuis , Rotterdam, The Netherlands