About the Authors

Qian He

Contributed equally to this work with: Qian He, Cheng Wu, Hong Luo

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

Cheng Wu

Contributed equally to this work with: Qian He, Cheng Wu, Hong Luo

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

Hong Luo

Contributed equally to this work with: Qian He, Cheng Wu, Hong Luo

Affiliation Center of Educational Technology, Second Military Medical University, Shanghai, China

Zhi-Yong Wang

Affiliation Department of Information, Changhai Hospital, Second Military Medical University, Shanghai, China

Xiu-Qiang Ma

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

Yan-Fang Zhao

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

Jian Lu

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

Chun Xiang

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

Ying-Yi Qin

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

Shun-Quan Wu

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

Fei-Fei Yu

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

Jia He

hejia63@yeah.net

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 QH CW XQM. Performed the experiments: QH CW HL ZYW FFY. Analyzed the data: CX YYQ SQW. Wrote the paper: QH CW YFZ JL.