1. Department of Clinical and Molecular Sciences, Rheumatology Unit, Carlo Urbani Hospital, Polytechnic University of Marche, Jesi, Ancona, Italy
2. Rheumatology Department, Internal Medicine Clinic, Kalmar County Hospital, Kalmar, Sweden
3. Institute of Rheumatology and Department of Rheumatology, 1st Faculty of Medicine, Charles University, Prague, Czech Republic
4. Department of Pediatric and Adult Rheumatology, Motol University Hospital, Prague, Czech Republic