[1
]University of Michigan Scleroderma Program, Ann Arbor, MI, USA
[2
]UCLA, Los Angeles, CA, USA
[3
]Paris Descartes University, rheumatology A dpt, Cochin Hospital, Paris, France
[4
]Department of Medicine, McGill University Division of Rheumatology Jewish General
Hospital, Montréal, Canada
[5
]Department of Immunology and Rheumatology, University of Pécs, Hungary
[6
]Division of Rheumatology, University Hospital Zurich, Zurich, Switzerland
[7
]Hamburger Zentrum für Kinder und Jugendrheumatologie, Hamburg, Germany
[8
]Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine,
2Tokyo, Japan
[9
]Department of Experimental & Clinical Medicine, Division of Rheumatology AOUC, University
of Florence, Firenze, Italy
[10
]University of Texas McGovern Medical School, Houston, TX, USA
[11
]University of Pittsburgh, Pittsburgh, PA, USA
[12
]University of Pennsylvania, Philadelphia, PA, USA
[13
]Deparment of Medicine, University of Western Ontario, London, ON, Canada
[14
]Scleroderma Research Consultants LLC, Litchfield, CT, USA
[15
]Georgetown University, Washington DC, USA
[16
]Division of Rheumatology, St. Vincent’s Hospital, Melbourne, Australia
[17
]Centre for Rheumatology, Royal Free and University College London Medical School,
London, UK