Dermatomyositis

• Hokkaido University Hospital — Sapporo, Hokkaido, Japan
• Tsukuba University Hospital — Tsukuba, Ibaraki, Japan
• Osaka Minami Medical Center — Kawachi-Nagano, Osaka, Japan
• Juntendo University Hospital — Bunkyo-ku, Tokyo, Japan

• National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda, Maryland, United States

• University of Alabama — Birmingham, Alabama, United States
• Phoenix Neurological Associates — Phoenix, Arizona, United States
• University of California, Irvine — Irvine, California, United States
• Stanford Hospital and Clinics — Stanford, California, United States

• Rheumatology Division of Hospital das Clínicas da Faculdade de Medicina da Universidade de Sao Paulo — São Paulo, Brazil

• The Hospital for Sick Children — Toronto, Ontario, Canada

• The George Washington University Medical Faculty Associates Departments of Dermatology and Rheumatology — Washington D.C., District of Columbia, United States

• University Medical center Groningen — Groningen, Netherlands
• Erasmus Medical Center Rotterdam — Rotterdam, Netherlands
• UMC Utrecht, department of pediatrics — Utrecht, Netherlands

• North Shore LIJ Medical Center — Great Neck, New York, United States
• University of Pittsburgh — Pittsburgh, Pennsylvania, United States

• National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda, Maryland, United States

Not specified