About the Authors

Yan Feng

Contributed equally to this work with: Yan Feng, Sijun Liu

Affiliation Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, People’s Republic of China

Sijun Liu

Contributed equally to this work with: Yan Feng, Sijun Liu

Affiliations Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, People’s Republic of China, Department of Epidemiology, Kangda College, Nanjing Medical University, Nanjing, People’s Republic of China

Qungang Wang

Affiliation Department of Tuberculosis, Zhangjiagang Center for Disease Prevention and Control, Zhangjiagang, People’s Republic of China

Liang Wang

Affiliation Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, Tennessee, United States of America

Shaowen Tang

Affiliation Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, People’s Republic of China

Jianming Wang

merry21st@yahoo.com.cn (JW); weiluxx@163.com (WL)

Affiliation Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, People’s Republic of China

Wei Lu

merry21st@yahoo.com.cn (JW); weiluxx@163.com (WL)

Affiliation Department of Chronic Infectious Diseases, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing, People’s Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YF JW WL. Analyzed the data: YF SL QW LW ST JW WL. Wrote the paper: YF LW JW.