1. Department of Public Health, Juntendo University Graduate School of Medicine, Tokyo, Japan.
2. Department of Public Health, Faculty of Medicine, Juntendo University, Tokyo, Japan.
3. Department of Public Health and Epidemiology, Faculty of Medicine, Oita University, Oita, Japan.
4. Laboratory of Community Health and Nutrition, Special Course of Food and Health Science, Department of Bioscience, Graduate School of Agriculture, Ehime University, Matsuyama, Japan.
5. Department of East Asian Traditional Medicine, Ehime Prefectural Central Hospital, Matsuyama, Japan.