1. Department of Public Health, Shiga University of Medical Science , Seta-Tsukinowa-cho, Otsu 520-2192 , Japan
2. Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama 700-8558 , Japan
3. NCD Epidemiology Research Center, Shiga University of Medical Science , Otsu 520-2192 , Japan
4. Graduate School of Public Health, Shizuoka Graduate University of Public Health , Shizuoka 420-0881 , Japan
5. Department of Cardiovascular Medicine, Shiga University of Medical Science , Otsu 520-2192 , Japan
6. Department of Hygiene, Wakayama Medical University , Wakayama 641-8509 , Japan
7. Division of Cardiology, Department of Internal Medicine, Kohka Public Hospital , Kohka 528-0074 , Japan
8. Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine , Kyoto 606-8501 , Japan
9. Department of Preventive Medicine and Public Health, Keio University School of Medicine , Tokyo 160-8582 , Japan