Marc C. Hochberg, MD, MPH, MACP, Professor of Medicine and Epidemiology and Public Health; Head, Division of Rheumatology and Clinical Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA, Ellen M Gravallese, MD, Professor of Medicine, University of Massachusetts Medical School, Division of Rheumatology; Director of Translational Research, Musculoskeletal Center of Excellence, University of Massachusetts Medical School and University of Massachusetts Memorial Medical Center; Myles J. McDonough Chair in Rheumatology, University of Massachusetts Medical School, Worcester, Massachusetts, Josef S. Smolen, MD, FRCP, Professor of Medicine, Chairman, Department of Medicine III, Division of Rheumatology, Medical University of Vienna;Chairman, Second Department of Medicine, Center for Rheumatic Diseases, Hietzing Hospital, Vienna, Austria, Michael E. Weinblatt, MD, John R. and Eileen K. Riedman Professor of Medicine, Harvard Medical School; R. Bruce and Joan M. Mickey Distinguished Chair in Rheumatology, Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, Massachusetts, USA, Michael H. Weisman, MD, Cedars-Sinai Chair in Rheumatology, Director, Division of Rheumatology, Professor of Medicine, Cedars-Sinai Medical Center, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California, USA and Desiree van der Heijde, Professor of Rheumatology; University Hospital Maastricht; Maastricht, Netherlands