About the Authors

Zeng Ge

Affiliation National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Xiaolei Guo

Affiliation Shandong Center for Disease Control and Prevention, Jinan, China

Xiaorong Chen

Affiliation National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Jiyu Zhang

Affiliation Shandong Center for Disease Control and Prevention, Jinan, China

Liuxia Yan

Affiliation National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Junli Tang

Affiliation Shandong Center for Disease Control and Prevention, Jinan, China

Xiaoning Cai

Affiliation National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Aiqiang Xu

aqxuepi@163.com (AX); majix@163.com (JM)

Affiliation Shandong Center for Disease Control and Prevention, Jinan, China

Jixiang Ma

aqxuepi@163.com (AX); majix@163.com (JM)

Affiliation National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Competing Interests

The authors declare that there are no competing interests.

Author Contributions

Conceived and designed the experiments: ZG AX JM. Performed the experiments: XG XRC JZ LY JT XNC. Analyzed the data: ZG. Contributed reagents/materials/analysis tools: ZG. Wrote the paper: ZG AX JM.