About the Authors

Feng-Ping Lu

Affiliations Department of Geriatrics and Gerontology, National Taiwan University Hospital, Taipei, Taiwan, Institute of Health Policy and Management, College of Public Health, National Taiwan University, Taipei, Taiwan

Kun-Pei Lin

Affiliations Department of Geriatrics and Gerontology, National Taiwan University Hospital, Taipei, Taiwan, Institute of Epidemiology, College of Public Health, National Taiwan University, Taipei, Taiwan

Hsu-Ko Kuo

hsukokuo@yahoo.com

Affiliations Department of Geriatrics and Gerontology, National Taiwan University Hospital, Taipei, Taiwan, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, Division of Gerontology Research, National Health Research Institutes, Taipei, Taiwan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FPL HKK. Performed the experiments: FPL KPL HKK. Analyzed the data: FPL KPL HKK. Contributed reagents/materials/analysis tools: HKK. Wrote the paper: FPL HKK.