About the Authors

Yu-Chen Chang

Affiliations Department of Community Health, Chia-Yi Christian Hospital, Chia-Yi, Taiwan, Division of Geriatrics, Chia-Yi Christian Hospital, Chia-Yi, Taiwan

Grace Yao

Affiliation Department of Psychology, National Taiwan University, Taipei, Taiwan

Susan C. Hu

Affiliation Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan

Jung-Der Wang

jdwang121@gmail.com

Affiliations Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Departments of Internal Medicine and Occuptional and Environmental Medicine, National Cheng Kung University, Tainan, Taiwan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JDW YCC GY. Performed the experiments: YCC GY SCH. Analyzed the data: YCC GY. Contributed reagents/materials/analysis tools: YCC GY. Wrote the paper: YCC SCH.