About the Authors

Xiangni Su

Contributed equally to this work with: Xiangni Su, Lei Shang

Affiliation Department of Nursing, the Fourth Military Medical University, Xi’an, China

Lei Shang

Contributed equally to this work with: Xiangni Su, Lei Shang

Affiliation Department of Health Statistics, the Fourth Military Medical University, Xi’an, China

Qiaoling Xu

Affiliation Department of Nursing, the Fourth Military Medical University, Xi’an, China

Nannan Li

Affiliation Department of Nursing, the Fourth Military Medical University, Xi’an, China

Jianhua Chen

Affiliation Department of Nursing, the Fourth Military Medical University, Xi’an, China

Liping Zhang

Affiliation Department of Nursing, the Health College, Xi’an, China

Lei Zhang

shaochen@fmmu.edu.cn (LZ); qianzhen@fmmu.edu.cn (QZ)

Affiliation Department of Epidemiology, the Fourth Military Medical University, Xi’an, China

Qianzhen Hua

shaochen@fmmu.edu.cn (LZ); qianzhen@fmmu.edu.cn (QZ)

Affiliation Department of Nursing, the Fourth Military Medical University, Xi’an, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XS QZH. Performed the experiments: XS QLX NNL JHC LPZ. Analyzed the data: XS LS. Contributed reagents/materials/analysis tools: LS LZ. Wrote the paper: XS.