[1] Natl Inst Rheumatism & Physiotherapy, Dept Rheumatol 3, Frankel Leo ut 27-29, H-1023 Budapest, Hungary
[2] McMaster Univ, Dept Med, Hamilton, ON L8P 1H6, Canada
[3] Haldimand War Mem Hosp, 400 Broad St, Dunnville, ON N1A 2P7, Canada
[4] Sheffield Hallam Univ, Sheffield S1 1WB, England