1. Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa , Pisa, Italy
2. Centre for Musculoskeletal Research, Faculty of Biology, Medicine and Health, The University of Manchester , Manchester, UK
3. The Kellgren Centre for Rheumatology, Manchester University Hospitals NHS Foundation Trust , Manchester, UK
4. Manchester Academic Health Science Centre , Manchester, UK
5. Lupus Europe , Denmark
6. Grupo Peruano de Estudio de Enfermedades Autoinmunes Sistemicas, Universidad Cientifica del Sur , Lima, Peru
7. Rheumatology Department, Hospital Guillermo Almenara Irigoyen-EsSalud , Lima, Peru
8. Department of Rheumatology, National Reference Center for Rare Autoimmune Diseases (RESO), Hôpitaux Universitaires de Strasbourg, INSERM UMR-S 1109 , Strasbourg, France