About the Authors

Liya Huang

Contributed equally to this work with: Liya Huang, Fei Wang

Affiliation Department of Geriatrics, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China

Fei Wang

Contributed equally to this work with: Liya Huang, Fei Wang

Affiliation Department of Geriatrics, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China

Yuqiang Wang

Affiliation Department of Geriatrics, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China

Qing Cao

Affiliation Department of Geriatrics, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China

Tiantian Sang

Affiliation Department of Geriatrics, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China

Fang Liu

liufang_sh2008@yeah.net (FL); shuyanchencn@hotmail.com (SC)

Affiliation Department of Geriatrics, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China

Shuyan Chen

liufang_sh2008@yeah.net (FL); shuyanchencn@hotmail.com (SC)

Affiliation Department of Geriatrics, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FL SC. Performed the experiments: LH FW YW QC TS. Analyzed the data: LH. Contributed reagents/materials/analysis tools: SC. Wrote the paper: LH FW FL SC.