1. Rheumatology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
2. Coimbra Institute for Clinical and Biomedical Research (i.CBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
3. Department of Psychology, Health and Technology, Enschede, Netherlands and Stichting Tools Patient Empowerment, University of Twente, Amsterdam, Netherlands
4. Department of Medical Humanities, Amsterdam University Medical Center, Amsterdam, The Netherlands
5. Department of Rheumatology, Centro Hospitalar Universitário do Algarve, Faro, Portugal
6. Lisbon Academic Medical Centre, Lisbon, Portugal
7. Algarve Biomedical Center, Faro, Portugal
8. Department of Rheumatology and Clinical Immunology, Charité University Medicine Berlin, Berlin, Germany
9. Research Laboratory and Academic Division of Clinical Rheumatology, Department of Internal Medicine, University of Genova, IRCCS Polyclinic Hospital San Martino, Genova, Italy
10. Discipline of Rheumatology, Medical Science School, Rio de Janeiro State University, Rio de Janeiro, Brazil
11. Department of Epidemiology and Biostatistics, Amsterdam Rheumatology and Immunology Center, Amsterdam University Medical Centers, Vrije Universiteit, Amsterdam, Netherlands