About the Authors

Hui-Ju Han

Affiliation Department of Epidemiology, School of Public Health, Shandong University, Jinan, Shandong, China

Hong-ling Wen

Affiliation Department of Microbiology, School of Public Health, Shandong University, Jinan, Shandong, China

Li Zhao

Affiliation Department of Microbiology, School of Public Health, Shandong University, Jinan, Shandong, China

Jian-wei Liu

Affiliation Department of Epidemiology, School of Public Health, Shandong University, Jinan, Shandong, China

Li-Mei Luo

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

Chuan-Min Zhou

Affiliation Department of Epidemiology, School of Public Health, Shandong University, Jinan, Shandong, China

Xiang-Rong Qin

Affiliation Department of Microbiology, School of Public Health, Shandong University, Jinan, Shandong, China

Ye-Lei Zhu

Affiliation Department of Microbiology, School of Public Health, Shandong University, Jinan, Shandong, China

Xue-Xing Zheng

Affiliation Department of Microbiology, School of Public Health, Shandong University, Jinan, Shandong, China

Xue-Jie Yu

xuyu@utmb.edu

Affiliations Department of Epidemiology, School of Public Health, Shandong University, Jinan, Shandong, China, University of Texas Medical Branch, Galveston, Texas, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: HJH. Funding acquisition: XJY. Investigation: HJH HLW LZ JWL LML CMZ XRQ YLZ XXZ. Methodology: HJH. Project administration: HJH. Resources: HJH XJY. Writing – original draft: HJH XJY. Writing – review & editing: HJH XJY.