[1] Univ Milan, Dept Clin Sci & Community Hlth, Milan, Italy
[2] ASST Gaetano Pini CTO, Dept Rheumatol & Med Sci, Milan, Italy
[3] Univ Paris Cite, Hop Cochin, AP HP Ctr, Rheumatol Dept A, Paris, France
[4] Sint Maartenskliniek, Dept Rheumatol, Nijmegen, Netherlands
[5] Charite Univ Med Berlin, Dept Rheumatol & Clin Immunol, Berlin, Germany
[6] Galapagos NV, Biostat, Mechelen, Belgium
[7] Galapagos GmbH, Med Affairs, Basel, Switzerland
[8] Galapagos NV, Med Affairs, Mechelen, Belgium
[9] Neil Betteridge Associates, London, England
[10] Univ Hosp Complex Pontevedra, Dept Rheumatol, Pontevedra, Spain
[11] Univ Hosp Leuven, Leuven, Belgium
[12] Katholieke Univ Leuven, Dept Rheumatol, Leuven, Belgium
[13] Kings Coll London, Ctr Rheumat Dis, London, England