1. CREATE Centre, Division of Infection and Immunity, Cardiff University, Cardiff, UK
2. Division of Rheumatology, University of Pavia and IRCCS Policlinico S. Matteo Foundation, Pavia, Italy
3. Department of Medicine, Universidade Federal do Rio Grande do Sul Porto Alegre, Rio Grande do Sul, Brazil
4. Department of Rheumatology, APHP, Pitie Salpetriere Hospital, Pierre and Marie Curie University, Paris, France
5. Department of Rheumatology, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain
6. Genentech, South San Francisco, CA, USA
7. F. Hoffmann-La Roche, Basel, Switzerland