About the Authors

Shuang Song

Affiliation Department of Geriatrics, Southwest Hospital, Third Military Medical University, Chongqing, China

Pan Gao

Affiliation Department of Geriatrics, Southwest Hospital, Third Military Medical University, Chongqing, China

Hang Xiao

Affiliation Department of Geriatrics, Southwest Hospital, Third Military Medical University, Chongqing, China

Yan Xu

Affiliation Department of Gynaecology and Obstetrics, Southwest Hospital, Third Military Medical University, Chongqing, China

Lian Yi Si

doctorsiliangyi@gmail.com

Affiliation Department of Geriatrics, Southwest Hospital, Third Military Medical University, Chongqing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SSS LYS. Performed the experiments: SSS YX. Analyzed the data: SSS HX. Contributed reagents/materials/analysis tools: SSS LYS PG. Wrote the manuscript: SSS PG.