About the Authors

Chih-Cheng Chang

Affiliations Department of Psychiatry, Chi Mei Medical Center, Tainan, Taiwan, Health Service and Population Research Department, Institute of Psychiatry, King's College London, London, United Kingdom, Department of Senior Citizen Service Management, College of Recreation and Health Management, Chia Nan University of Pharmacy and Science, Tainan, Taiwan

Tsung-Hsien Wu

Affiliation Department of Psychiatry, Chi Mei Medical Center, Liouying, Tainan, Taiwan

Chih-Yin Chen

Affiliations Department of Senior Citizen Service Management, College of Recreation and Health Management, Chia Nan University of Pharmacy and Science, Tainan, Taiwan, Department of Nursing, College of Health Sciences, Chang Jung Christian University, Tainan, Taiwan

Jung-Der Wang

Affiliations Deparment of Public Health, College of Medicine, National Chen Kung University, Tainan, Taiwan, Departments of Internal Medicine and Occupational and Environmental Medicine, National Cheng Kung University Hospital, Tainan, Taiwan

Chung-Ying Lin

cylin36933@gmail.com

Affiliation Deparment of Public Health, College of Medicine, National Chen Kung University, Tainan, Taiwan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: C-CC T-HW. Performed the experiments: C-CC T-HW. Analyzed the data: C-YL. Contributed reagents/materials/analysis tools: C-YC. Wrote the paper: C-YL. Patient recruitment: C-CC T-HW. Critically revised the manuscript: C-YC C-YL J-DW.