1. Department of Experimental and Clinical Medicine, Division of Internal Medicine, University of Florence , Florence, Italy
2. University of L’Aquila, Department of Clinical Medicine, Life Health and Environmental Sciences, Internal Medicine and Nephrology Division, ASL1 Avezzano-Sulmona-L’Aquila , L’Aquila, Italy
3. Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds , Leeds, UK
4. Pulmonology Unit, University of Trieste, Department of Medical Surgical and Health Sciences, Hospital of Cattinara , Trieste, Italy
5. FESCA (Federation of European Scleroderma Associations) Belgium, & GILS (Gruppo Italiano, Lotta alla Sclerodermia) , Italy
6. Department of Experimental and Clinical Medicine, University of Florence , Florence, Italy
7. Department of Rheumatology, Centro Hospitalar Universitário de São João , Porto, Portugal
8. Sheffield Teaching Hospitals NHS Foundation Trust , Sheffield, UK
9. Department of Hand Surgery, Salford Royal , Salford, UK
10. Department of Experimental and Clinical Medicine, Division of Rheumatology, University of Florence , Florence, Italy
11. Department of Medicine, Division of Rheumatology, University of Texas Health Science Center at Houston , Houston, USA
12. Unit of Immunology, Rheumatology, Allergy and Rare diseases (UnIRAR), IRCCS San Raffaele Hospital , Milan, Italy
13. Department of Rheumatology, Northern Care Alliance NHS Foundation Trust, Salford Care Organisation , Salford, UK
14. Division of Musculoskeletal and Dermatological Sciences, The University of Manchester, Manchester Academic Health Science Centre , Manchester, UK