1. Institute for Environmental and Gender Specific Medicine; Juntendo University Graduate School of Medicine; Chiba; Japan
2. New Frontiers Research Laboratories; Toray Industries, Inc.; Kanagawa; Japan
3. Head Office; Toray Industries, Inc.; Tokyo; Japan
4. Department of Internal Medicine and Rheumatology; Juntendo University School of Medicine; Tokyo; Japan
5. Department of Rheumatology; Kohnodai Hospital; National Center for Global Health and Medicine; Chiba; Japan