1. Division of Rheumatology, Department of Internal Medicine, Tokyo Women’s Medical University School of Medicine , Shinjuku-ku, Tokyo 162-8666, Japan
2. Department of Public Health and Epidemiology, Meiji Pharmaceutical University , Kiyose, Tokyo 204-8588, Japan
3. Department of Epidemiology, Nara Medical University School of Medicine , Kashihara, Nara 634-8521, Japan
4. Department of Public Health, Jichi Medical University , Shimotsuke-shi, Tochigi 329-0498, Japan
5. Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute , Suita, Osaka 564-8565, Japan