1 Institute of Population Research, Peking University, Beijing, China.
2 Graduate School of Public Health, St. Luke's International University, Tokyo, Japan.
3 School of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
4 Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China.