Institution: | 1. Rheumatology Unit, Department of Medicine, University of Perugia, Perugia, Italy;2. Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, IDIVAL, University of Cantabria, Santander, Spain;3. Epidemiology Unit, Italian Society for Rheumatology, Milano, Italy;4. Rheumatology Department, Hospital Universitario de la Princesa, IIS-IP, Madrid, Spain;5. Servicio de Reumatología, Hospital General Universitario Gregorio Marañón, Madrid, Spain;6. UOC Reumatologia, Azienda Ospedaliero Universitaria S. Anna, University of Ferrara, Ferrara, Italy;7. Interdisciplinary Department of Medicine (DIM), Rheumatology Unit, University of Bari, Bari, Italy;8. Servicio de Reumatología, Hospital Universitario La Paz, Madrid, Spain;9. Clinic of Rheumatology, Department of Medical and Biological Sciences (DSMB), Santa Maria della Misericordia Hospital, Udine, Italy;10. Systemic Autoimmune Diseases Unit, Hospital Clínico San Cecilio, Granada, Spain;11. Department for Rheumatology and Clinical Immunology, St. Josef Krankenhaus, University Clinic, Essen, Germany;12. Division of Rheumatology, University and IRCCS Policlinico S. Matteo Foudation, Pavia, Italy;13. ACURA Rheumatology Center, Bad Kreuznach, Germany;14. Department of Rheumatology, University Hospital Ramón y Cajal, Madrid, Spain;15. Rheumatology Unit, Santa Chiara Hospital, Trento, Italy;p. Rheumatology Unit, Ospedale Guglielmo da Saliceto, Piacenza, Italy;q. Department of Internal Medicine, Rheumatology and Clinical Immunology, University Hospital Johannes-Gutenberg, Mainz, Germany;r. Division of Rheumatology, Mauriziano Hospital, Turin, Italy;s. Division of Rheumatology and Clinical Immunology, Humanitas Research Hospital, Rozzano, Milano, Italy;t. Tulane University Lung Center Tulane/UMC Scleroderma and Sarcoidosis Patient Care and Research Center New Orleans, New Orleans, LA, USA;u. Rheumatology Department, Città Della Salute e della Scienza, Torino, Italy;v. Rheumatology Unit, Department of Internal Medicine, Azienda Ospedaliera ASMN, Reggio Emilia, Italy;w. Rheumatology Unit, University and AO Spedali Civili, Brescia, Italy;x. Division of Rheumatology, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy;1. INOVA Diagnostics, Inc., San Diego, CA, USA;2. NIEHS, National Institutes of Health, DHHS, Bethesda, MD, USA;3. Department of Medicine, University of Calgary, Calgary, Canada |