[1] Corvinus Univ Budapest, Dept Hlth Econ, H-1093 Budapest, Hungary
[2] Flor Ferenc Cty Hosp, Dept Rheumatol, H-2143 Kistarcsa, Hungary
[3] Polyclin Hosp Bros St John God Budapest, Dept Rheumatol 2, H-1023 Budapest, Hungary
[4] Univ Pecs, Dept Rheumatol & Immunol, H-7632 Pecs, Hungary
[5] Polyclin Hosp Bros St John God Budapest, Dept Rheumatol 1, H-1023 Budapest, Hungary
[6] Kalma Pandy Hosp, Dept Rheumatol, H-5700 Gyula, Hungary
[7] Hosp Hungarian State Railways, Dept Rheumatol, H-5000 Szolnok, Hungary
[8] Univ Szeged, Dept Rheumatol, Albert Szent Gyorgy Hlth Ctr, Fac Med, H-6725 Szeged, Hungary
[9] Andras Josa Hosp, Dept Rheumatol, H-4400 Nyiregyhaza, Hungary
[10] Univ Debrecen Med & Hlth Sci Ctr, Inst Med, Dept Rheumatol, H-4032 Debrecen, Hungary
[11] Semmelweis Teaching Hosp, Dept Rehabil, Szent Ferenc Hosp Div, H-3529 Miskolc, Hungary
[12] Mil Hosp, Dept Rheumatol, Natl Hlth Ctr, H-1062 Budapest, Hungary