About the Authors

Chao Wang

Contributed equally to this work with: Chao Wang, Xiao-Jing Guo

Affiliation Department of Health Statistics, Second Military Medical University, Shanghai, China

Xiao-Jing Guo

Contributed equally to this work with: Chao Wang, Xiao-Jing Guo

Affiliation Department of Health Statistics, Second Military Medical University, Shanghai, China

Jin-Fang Xu

Affiliation Department of Health Statistics, Second Military Medical University, Shanghai, China

Cheng Wu

Affiliation Department of Health Statistics, Second Military Medical University, Shanghai, China

Ya-Lin Sun

Affiliation Department of Health Statistics, Second Military Medical University, Shanghai, China

Xiao-Fei Ye

Affiliation Department of Health Statistics, Second Military Medical University, Shanghai, China

Wei Qian

Affiliation Department of Health Statistics, Second Military Medical University, Shanghai, China

Xiu-Qiang Ma

Affiliation Department of Health Statistics, Second Military Medical University, Shanghai, China

Wen-Min Du

Affiliation Adverse Drug Reaction Monitoring Centre of Shanghai, Shanghai, China

Jia He

hejia63@yahoo.com

Affiliation Department of Health Statistics, Second Military Medical University, Shanghai, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: C. Wang X-JG JH. Performed the experiments: C. Wang J-FX C. Wu Y-LS. Analyzed the data: C. Wang X-FY WQ. Contributed reagents/materials/analysis tools: W-MD X-QM. Wrote the paper: C. Wu X-JG Y-LS.