Institute of Child and Adolescent Health;
Health Science Center;
Peking University;
Beijing 100191;
China;
The National Clinical Research Center for Mental Disorders&Beijing Key Laboratory of Mental Disorders;
Beijing Anding Hospital;
Capital Medical University;
Beijing 100088;
China;
Department of Child Care;
Guangzhou Women and Children's Medical Center;
Guangzhou 510623;
Guangdong;
China;
School of Agroforestry&Medicine;
the Open University of China;
Beijing 100081;
China;
Yale School of Public Health;
Yale University;
New Haven;
CT 06510-3201;
USA;
Department of Child;
Adolescent and Maternal Health;
School of Public Health;
Capital Medical University;
Beijing 100069;
China;
