About the Authors

Yu-Hao Zhou

Contributed equally to this work with: Yu-Hao Zhou, Jian-Yuan Tang, Mei-Jing Wu, Jian Lu

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

Jian-Yuan Tang

Contributed equally to this work with: Yu-Hao Zhou, Jian-Yuan Tang, Mei-Jing Wu, Jian Lu

Affiliation Office of Compliance and Development, Center for Drug Evaluation, SFDA, Beijing, China

Mei-Jing Wu

Contributed equally to this work with: Yu-Hao Zhou, Jian-Yuan Tang, Mei-Jing Wu, Jian Lu

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

Jian Lu

Contributed equally to this work with: Yu-Hao Zhou, Jian-Yuan Tang, Mei-Jing Wu, Jian Lu

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

Xin Wei

Affiliation Shanghai Jiao Tong University School of Medicine, Shanghai, China

Ying-Yi Qin

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

Chao Wang

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

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: JH Y-HZ. Performed the experiments: Y-HZ J-YT XW CW M-JW J-FX. Analyzed the data: Y-HZ Y-YQ J-FX. Contributed reagents/materials/analysis tools: JH Y-HZ. Wrote the paper: JL Y-HZ. Contributed to the electronic search and hand-search of the literature: M-JW J-YT.