About the Authors

Xian-Yang Lei

Affiliations The Second Xiangya Hospital, Central South University, Changsha, Hunan Province, China, Office of the President, Central South University, Changsha, Hunan Province, China

La-Mei Xiao

Affiliation The Second Xiangya Hospital, Central South University, Changsha, Hunan Province, China

Ya-Nan Liu

Affiliation Xiangya Nursing School, Central South University, Changsha, Hunan Province, China

Ya-Min Li

li_yamin3@163.com

Affiliation The Second Xiangya Hospital, Central South University, Changsha, Hunan Province, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YML XYL. Performed the experiments: LMX YNL. Analyzed the data: LMX YNL. Contributed reagents/materials/analysis tools: XYL. Wrote the paper: XYL YML.