1. Sorbonne University, UPMC University Paris 06, Institut Pierre Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié Salpêtrière; Paris France
2. Paris Descartes University, Cochin Hospital, AP-HP, INSERM, PRES Sorbonne Paris-Cité; Paris France
3. Sf. Maria Hospital, University of Medicine and Pharmacy Carol Davila; Bucharest Romania
4. EULAR Standing Committee of People With Arthritis/Rheumatism in Europe; Zurich Switzerland
5. Østfold University College; Halden Norway
6. Tallinn Central Hospital; Tallinn Estonia
7. Diakonhjemmet Hospital; Oslo Norway