1. Toronto Scleroderma Program, Toronto Western Hospital, Mount Sinai Hospital, Department of Medicine, Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario - Canada
2. Division of Rheumatology, University of Michigan Scleroderma Program, Ann Arbor, Michigan - USA
3. Rheumatology A Department, Paris Descartes University, Cochin Hospital, Paris - France
4. Department of Rheumatology AVC, Department of BioMedicine, Division of Rheumatology AOUC, Department of Medicine & Denothecentre, University of Florence, Florence - Italy
5. Division of Rheumatology, David Geffen School of Medicine, University of California Los Angeles, California - USA