1. Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine; Scleroderma/Myositis Center of Excellence (SMCE) Nippon Medical School Hospital, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, Japan
2. Systemic Autoimmune Diseases Unit, Vall d’Hebron General Hospital, Medicine Dept, Universitat Autónoma de Barcelona, Barcelona, Spain