[1] New Cross Hosp, Rheumatol, Wolverhampton, England
[2] Univ Erlangen Nurnberg, Dept Med Rheumatol & Immunol, Erlangen, Germany
[3] Ruhr Univ Bochum, Rheumazentrum Ruhrgebiet, Herne, Germany
[4] Ghent Univ Hosp, Dept Rheumatol, Ghent, Belgium
[5] Oregon Hlth & Sci Univ, Div Arthrit & Rheumat Dis, Portland, OR 97201 USA
[6] Univ Calif San Francisco, Ankylosing Spondylitis Clin, San Francisco, CA 94143 USA
[7] Univ Copenhagen, Copenhagen Ctr Arthrit Res COPECARE, Copenhagen, Denmark
[8] Novartis Healthcare Pvt Ltd, Hyderabad, Telangana, India
[9] Novartis Pharma AG, Immunol Hepatol & Dermatol Dept, Basel, Switzerland
[10] Novartis Pharmaceut, Immunol Hepatol & Dermatol Dept, E Hanover, NJ USA