About the Authors
- Yan-yan Li, Chuan-wei Zhou, Jian Xu, Yun Qian, Bei Wang
- Department of Geriatrics, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
The authors have declared that no competing interests exist.
Conceived and designed the experiments: YL CZ. Performed the experiments: YL JX. Analyzed the data: YL YQ. Contributed reagents/materials/analysis tools: YL BW. Wrote the paper: YL.