Scleroderma, Systemic

• Arizona Arthritis — Glendale, Arizona, United States
• Pacific Arthritis Care Center — Los Angeles, California, United States
• The Board of Trustees of the Leland Stanford Junior University — Redwood City, California, United States
• Yale School of Medicine - The Anlyan Center (TAC) for Medical Research & Education — New Haven, Connecticut, United States

Not specified

• UCLA — Los Angeles, California, United States
• Hospital of Special Surgery — New York, United States
• University of Pennsylvania — Philadelphia, Pennsylvania, United States
• University of Pittsburgh Medical Center — Pittsburgh, Pennsylvania, United States

• Amasya University — Amasya, Turkey (Türkiye)

• University Hospital Tuebingen; Department of oncology, hematology, rheumatology, immunology and pulmology — Tübingen, Germany

• Sanguine Biosciences — Los Angeles, California, United States

• RWJ Medical School — New Brunswick, New Jersey, United States

• Royal Adelaide Hospital — Adelaide, South Australia, Australia
• Charité Universitätsmedizin Berlin — Berlin, Germany
• Uniklinik Köln, innere Medizin — Cologne, Germany
• ASST Spedali Civili di Brescia — Brescia, Italy

• Universidad de Granada — Granada, Spain

• Manal Hassanien — Asyut, Yes, Egypt