About the Authors

Hualiang Lin

Affiliations Guangdong Provincial Institute of Public Health, Guangzhou, China, Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China

Yonghui Zhang

Affiliation Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China

Yanjun Xu

Affiliation Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China

Xiaojun Xu

Affiliation Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China

Tao Liu

Affiliations Guangdong Provincial Institute of Public Health, Guangzhou, China, Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China

Yuan Luo

Affiliations Guangdong Provincial Institute of Public Health, Guangzhou, China, Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China

Jianpeng Xiao

Affiliations Guangdong Provincial Institute of Public Health, Guangzhou, China, Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China

Wei Wu

Affiliations Guangdong Provincial Institute of Public Health, Guangzhou, China, Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China

Wenjun Ma

mwj68@vip.tom.com

Affiliations Guangdong Provincial Institute of Public Health, Guangzhou, China, Center for Disease Control and Prevention of Guangdong Province, Guangzhou, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HLL WJM. Performed the experiments: HLL YHZ. Analyzed the data: YJX XJX TL. Contributed reagents/materials/analysis tools: YL JPX. Wrote the paper: HLL WJM. Revision of the manuscript: HLL WW.