[1] Oregon Hlth & Sci Univ, Div Arthrit & Rheumat Dis, Portland, OR 97201 USA
[2] Leiden Univ Med Ctr, Dept Rheumatol, Leiden, Netherlands
[3] Univ Calif San Francisco, Dept Rheumatol, San Francisco, CA 94143 USA
[4] Second Mil Med Univ, Shanghai Changzheng Hosp, Dept Rheumatol & Immunol, Shanghai, Peoples R China
[5] Norfolk & Norwich Univ Hosp NHS Trust, Dept Rheumatol, Norwich, Norfolk, England
[6] Kagawa Univ, Div Hematol Rheumatol & Resp Med, Dept Internal Med, Fac Med, Takamatsu, Kagawa, Japan
[7] Univ Alberta, Dept Med, Edmonton, AB, Canada
[8] Univ Bielefeld, Klinikum Bielefeld, Bielefeld, Germany
[9] Case Western Reserve Univ, Metrohlth Med Ctr, Cleveland, OH USA
[10] Ghent Univ Hosp, Dept Rheumatol, Ghent, Belgium
[11] Univ Ghent, Ctr Inflammat Res, Ghent, Belgium
[12] UCB Pharma, Raleigh, NC USA
[13] UCB Pharma, Brussels, Belgium
[14] UCB Pharma, Slough, Berks, England
[15] Ruhr Univ Bochum, Rheumazentrum Ruhrgebiet Herne, Bochum, Germany