1. Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
2. Department of Nutritional Epidemiology and Shokuiku, National Institute of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
3. Research Unit of Advanced Interdisciplinary Care Science, Graduate School of Human Life Science, Osaka City University, Osaka, Japan
4. The Hokkaido Centre for Family Medicine, Sapporo, Japan
5. Department of Public Health and Hygiene, Graduate School of Medicine, University of the Ryukyus, Nishihara, Okinawa, Japan
6. Department of Public Health, Faculty of Medicine, Hokkaido University, Hokkaido, Japan
7. Department of Nutrition, Sapporo University of Health Sciences, Sapporo, Japan