Guangdong Provincial Key Laboratory of Food, Nutrition and Health, and Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, China. (S.L., Y.Z., S.Z., L.L., B.Y., J.F., M.X.)

Department of Statistics and Epidemiology, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, China. (L.L., B.Y.)