About the Authors

Yau-Hua Yu

hsukokuo@yahoo.com (H-KK); yauhuayu@gmail.com (Y-HY)

Affiliations School of Dentistry, National Yang-Ming University, Taipei, Taiwan, Department of Dentistry and the Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan

Hsu-Ko Kuo

hsukokuo@yahoo.com (H-KK); yauhuayu@gmail.com (Y-HY)

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

Kuo-Wei Chang

Affiliations School of Dentistry, National Yang-Ming University, Taipei, Taiwan, Department of Dentistry and the Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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