John Varga, MD John and Nancy Hughes Distinguished Professor Feinberg School of Medicine Director, Northwestern Scleroderma Program Chicago, Illinois, USA Christopher P. Denton, PhD, FRCP Professor of Experimental Rheumatology Centre for Rheumatology and Connective Tissue Diseases Division of Medicine University College London London, United Kingdom Fredrick M. Wigley, MD Martha McCrory Professor of Medicine Department of Medicine/Rheumatology The Johns Hopkins University School of Medicine Baltimore, Maryland, USA Yannick Allanore, MD Service de Rhumatologie A Université Paris Descartes, Hôpital Cochin Paris, France Masataka Kuwana, MD, PhD Professor Department of Allergy and Rheumatology Nippon Medical School GraduateSchool of Medicine Tokyo, Japan