[1] RCTs, Lyon, France
[2] Univ Med, Berlin, Germany
[3] CHU Brugmann, Brussels, Belgium
[4] Univ Leeds, Leeds, W Yorkshire, England
[5] Univ Med Ctr, Leiden, Netherlands
[6] Severo Ochoa, Rheumatol, Madrid, Spain
[7] Univ Copenhagen, DK-1168 Copenhagen, Denmark