1. Department of Preventive Medicine and Public Health, Keio University School of Medicine
2. Faculty of Nursing and Medical Care, Keio University
3. Department of Public Health, Hokkaido University Faculty of Medicine
4. Department of Public Health, Shiga University of Medical Science
5. Department of Hygiene and Public Health, Teikyo University School of Medicine
6. Research Institute of Strategy for Prevention
7. Center for Epidemiologic Research in Asia, Shiga University of Medical Science