1. Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University
2. Department of Preventive Dentistry and Dental Public Health, School of Dentistry, Aichi Gakuin University
3. Department of Environmental Medicine, Graduate School of Medical Sciences, Kyushu University
4. Biostatistics Center, Kurume University
5. Department of Health Management, School of Oral Health Sciences, Kyushu Dental University
6. Division of Research Management, Center for Cohort Studies, Graduate School of Medical Sciences, Kyushu University