1. Department of Rheumatology, Nobuhara Hospital, Japan
2. Department of Rheumatology and Infectious Diseases, Kitasato University School of Medicine, Japan
3. Department of Internal Medicine, Teikyo University School of Medicine, Japan
4. Department of Rheumatology, Tokyo Medical University, Japan
5. Immuno-Rheumatology Center, St. Luke's International Hospital, Japan
6. Department of Allergy and Rheumatology, Nippon Medical University Musashi-Kosugi Hospital, Japan
7. Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Japan
8. Comprehensive Medical Education Center, Niigata University School of Medicine, Japan
9. Department of Neurology, Brain Research Institute, Niigata University, Japan
10. Department of Neurology, Osaka University Graduate School of Medicine, Japan
11. Department of Neurology, Kindai University School of Medicine, Japan
12. Department of Internal Medicine and Clinical Immunology, Yokohama City University Graduate School of Medicine, Japan