[1] Univ Leeds, Rheumatol & Rehabil Res Unit, Leeds LS2 9NZ, W Yorkshire, England
[2] CH Univ Liege, WHO Collaborating Ctr, Bone & Cartilage Unit, B-4020 Liege, Belgium
[3] Free Univ Brussels, Erasme Hosp, B-1070 Brussels, Belgium
[4] Univ Leiden Hosp, Dept Rheumatol, NL-2300 RC Leiden, Netherlands
[5] Dept Rheumatol, D-83043 Bad Aibling, Germany
[6] Univ Magdeburg, Klin Rheumatol, D-39245 Vogelsang, Germany
[7] Univ Hosp La Paz, Rheumatol Unit, Madrid 28046, Spain
[8] IRCCS, Policlin San Matteo, Rheumatol Dept, I-27100 Pavia, Italy
[9] Wyeth Ayerst Res, Anti Inflammatory, St Davids, PA 19087 USA
[10] Hop Lapeyronie, Serv Immunorhumatol, F-34295 Montpellier 5, France
[11] Kings Coll Hosp, London SE22 8PT, England
[12] Ist Ortopedico Toscano P Palagi, I-50122 Florence, Italy
[13] Wyeth Ayerst Pharmaceut, Global Strateg Mkt, Philadelphia, PA 19101 USA