Systemic Sclerosis (SSc)

• The First Affiliated Hospital of Bengbu Medical University — Bengbu, Anhui, China
• The First Affiliated Hospital of University of Science and Technology of China — Hefei, Anhui, China
• Peking University People's Hospital — Beijing, Beijing Municipality, China
• The First Affiliated Hospital of Xiamen University — Xiamen, Fujian, China

• Boston Children's Hospital — Boston, Massachusetts, United States

• University hospital Montpellier — Montpellier, France

• Immunorheumatology Unit, Fondazione Policlinico Universitario Campus Bio-Medico — Rome, Italy

• Gustave Roussy — Villejuif, Val de Marne, France

Not specified

• The First Affiliated Hospital of University of Science and Technology of China — Hefei, Anhui, China

• Sohag University Hospital — Sohag, Egypt

Not specified

Not specified