About the Authors

Cheng Chen

Affiliation Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China

Qiao Liu

Affiliation Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China

Limei Zhu

Affiliation Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China

Haitao Yang

Affiliation Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China

Wei Lu

lwjscdc@gmail.com

Affiliation Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CC WL. Analyzed the data: CC QL LMZ HTY. Wrote the manuscript: CC.