1. Department of Clinical Immunology and Rheumatology, Hiroshima University Hospital, Japan
2. Postgraduate Clinical Training Center, Hiroshima University Hospital, Japan
3. Department of Rheumatology, National Hospital Organization, Kure Medical Center and Chugoku Cancer Center, Japan
4. Department of Rheumatology, Hiroshima Prefectural Hospital, Japan
5. Department of Dermatology, Hiroshima Prefectural Hospital, Japan