1. Department of Preventive Medicine and Public Health, Keio University School of Medicine
2. Department of Public Health, Shiga University of Medical Science
3. Center for Epidemiologic Research in Asia, Shiga University of Medical Science
4. Department of Health and Nutrition, University of Human Arts and Sciences
5. Department of Hygiene and Public Health Teikyo University School of Medicine
6. Research Institute of Strategy for Prevention, Tokyo, Japan