1. Department of Medicine, University of Alberta , Edmonton, Alberta, Canada
2. Eli Lilly and Company , Indianapolis, IN, USA
3. Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Rigshospitalet
4. Department of Clinical Medicine, University of Copenhagen , Copenhagen, Denmark
5. Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine , Tokyo, Japan
6. Ruhr-University Bochum , Bochum
7. Rheumazentrum Ruhrgebiet , Herne, Germany
8. Division of Arthritis and Rheumatic Diseases, Oregon Health and Science University , Portland, OR, USA
9. Department of Medicine, Division of Rheumatology, University of California, San Francisco, School of Medicine , San Francisco, CA, USA