1. Department of Epidemiology and Public Health, University College London, 1-19 Torrington Place, London WC1E 6BT, UK, Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan
j-aida@umin.ac.jp
2. Center for Well-being and Society, Nihon Fukushi University, Nagoya, Japan
3. Division of Sociological Approach in Dentistry, Department of Dental Sociology, Kanagawa Dental College, Yokosuka, Japan
4. Department of Registered Dietitian, Tokai Gakuen University Faculty of Human Wellness, Nagoya, Japan
5. Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan
6. Department of Epidemiology and Public Health, University College London, 1-19 Torrington Place, London WC1E 6BT, UK