1. Research Laboratories and Division of Clinical Rheumatology, Department of Internal Medicine, IRCCS, University of Genova, Genova, Italy
2. Department of Rheumatology, Ghent University Hospital
3. Faculty of Internal Medicine, Ghent University, Ghent, Belgium
4. Department of Rheumatology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA
5. Department of Medicine University of Michigan, University of Michigan Scleroderma Program, Ann Arbor, MI
6. The University of Manchester, Salford Royal NHS Foundation Trust, Manchester and NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester NHS Foundation Trust, Manchester Academic Health Science Centre, UK