1. Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, P.R. China.
2. Department of Endocrinology and Metabolism, Tianjin Medical University General Hospital, Tianjin, China.
3. The Shandong Institute for Endemic Disease Control and Research, Shandong, P.R. China.
4. Section of Endocrinology, Diabetes, and Nutrition, Boston University School of Medicine, Boston, Massachusetts.
5. Tianjin Key Laboratory of Environment, Nutrition and Public Health; Center for International Collaborative Research on Environment, Nutrition and Public Health; Public Health School of Tianjin Medical University, Tianjin, China.