Affiliation: | CHENG-YE JI 1,RITA YT SUNG 2,GUAN-SHENG MA 3,JUN MA 1,ZHONG-HU HE 1,, TIAN-JIAO CHEN 1 1 Institute of Child , Adolescent Health,Peking University Health Science Center,Beijing 100191,China 2 Department of Paediatrics,The Chinese University of Hong Kong,Hong Kong Special Administrative Region,China 3 National Institute for Nutrition , Food Safety,Chinese Center for Disease Control , Prevention,Beijing 100021,China |