[1] Clear Lake Rheumatol, Nassau Bay, TX USA
[2] Flor Francis Hosp, Dept Rheumatol, Kistarcsa, Hungary
[3] CHU Quebec, Res Ctr, Quebec City, PQ, Canada
[4] Univ Laval, Quebec City, PQ, Canada
[5] Altoona Ctr Clin Res, Duncansville, PA USA
[6] Novartis Pharma AG, Basel, Switzerland
[7] Inst Pravent Med & Klin Forsch GbR, Magdeburg, Germany