1. Division of Oral Health, Growth and Development, Section of Preventive and Public Health Dentistry; Kyushu University Faculty of Dental Science; Fukuoka Japan
2. Itoshima Dental Association; Itoshima Japan
3. Center for Educational Outreach and Admissions; Kyoto University; Kyoto Japan
4. Department of Health Management, School of Oral Health Science; Kyushu Dental College; Kitakyushu Japan
5. Division of Clinical Oral Rehabilitation; Nippon Dental University Graduate School of Life Dentistry; Tokyo Japan