1. Center for Pharmacoeconomics, Warsaw, Poland
2. Clinical Institute Ion Catacuzino, Bucharest, Romania
3. Clinical Hospital Zagreb, Zagreb, Croatia
4. Methodical Rheumatology Center Prof. Dr. Ion Stoia, Bucharest, Romania
5. Institute of Rheumathology, Beograd, Serbia
6. Consultant for Health Economics and Management, Beograd, Serbia
7. University of Medicine, Saint Maria UMF Carol Davila Hospital, Bucharest, Romania
8. University Hospital St. Ivan Rilski, Sofia, Bulgaria
9. Rheumatology Institute of RAMS, Moscow, Russia
10. Department of Rheumatology, East Tallinn Central Hospital, Tallinn, Estonia
11. University Medical Centre, Ljubljana, Slovenia
12. Pharma Projects s.r.o., Prague, Czech Republic
13. Military Medical Institute, Warsaw, Poland
14. East Tallin Central Hospital, Tallin, Estonia
15. Klinieki Centar Nis, Nis, Serbia
16. Medical University of Wroclaw, Wroclaw, Poland