About the Authors

Jing Xiao

Affiliation Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Nantong, Jiangsu, 226019, China

Chong Shen

Affiliation Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, 210029, China

Min J. Chu

Affiliation Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Nantong, Jiangsu, 226019, China

Yue X. Gao

Affiliation Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Nantong, Jiangsu, 226019, China

Guang F. Xu

Affiliation Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Nantong, Jiangsu, 226019, China

Jian P. Huang

Affiliation Department of Chronic Disease and Prevention, Center for Disease Control and Prevention of Nantong, Nantong, Jiangsu, 226007, China

Qiong Q. Xu

Affiliation Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Nantong, Jiangsu, 226019, China

Hui Cai

huicai2012@yahoo.com

Affiliation Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Nantong, Jiangsu, 226019, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JX CS HC. Performed the experiments: JX CS GFX JPH. Analyzed the data: JX YXG QQX MJC. Wrote the paper: JX CS HC MJC.