[Chen, Xi; Tang, Ting; Bai, Qinqin; Liu, Luyao; Chen, Lili; Huang, Qiaoling; Chen, Li] Univ South China, Coll Publ Hlth, Dept Publ Hlth Lab Sci, Hengyang, Peoples R China.
[Chen, Xi; Tang, Ting; Liu, Luyao; Chen, Lili; Huang, Qiaoling; Chen, Li] Key Lab Hengyang Hlth Hazard Factors Inspect & Qu, Hengyang, Peoples R China.
[Tang, Ting] First Peoples Hosp Yunnan Prov, Dept Infect Control, Kunming, Yunnan, Peoples R China.
[Li, Zhongyu] Univ South China, Hengyang Med Coll, Inst Pathogen Biol, Hengyang, Peoples R China.