1 Department of Nutrition and Food Hygiene, Beijing Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Beijing 100013, China.
2 Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211161, China.
3 Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China.