[Li, Chun; Zhao, Yang; Lu, Shaoyou; Liu, Shan] Sun Yat Sen Univ, Sch Publ Hlth Shenzhen, Guangzhou 510275, Peoples R China.
[Kang, Li; Yang, Dongfeng; Zhu, Zhou] Shenzhen Ctr Dis Control & Prevent, Shenzhen 518055, Peoples R China.
[Yang, Dongfeng] Univ South China, Sch Publ Hlth, Hengyang 421001, Peoples R China.
[Ma, Huimin] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China.
[Ma, Huimin] Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Ut, Guangzhou 510640, Peoples R China.