[Tan, Qinmei; Yang, F; Yang, Fei; Sun, Xiaoya; Yan, Sisi] Univ South China, Sch Publ Hlth, Hengyang Med Sch, Hunan Prov Key Lab Typ Environm Pollut & Hlth Haza, Hengyang 421001, Peoples R China.

[Chu, Hanyu] Hengyang Maternal & Child Hlth Hosp, Hengyang 421001, Peoples R China.

[Wei, Jia] Cent South Univ, Xiangya Sch Publ Hlth, Changsha 410078, Peoples R China.

[Wang, Jiangping] Hunan Agr Univ, Coll Vet Med, Hunan Engn Res Ctr Livestock & Poultry Hlth Care, Changsha 410128, Peoples R China.

[Zhu, Lemei] Changsha Med Univ, Sch Publ Hlth, Changsha 410219, Peoples R China.

[Yang, F ] U

Univ South China, Sch Publ Hlth, Hengyang Med Sch, Hunan Prov Key Lab Typ Environm Pollut & Hlth Haza, Hengyang 421001, Peoples R China.

Univ South China, Nanhua Hosp, Hengyang 421000, Peoples R China.

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