1. Department of Ophthalmology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
2. Health Information Center, Tzu Chi University, Hualien, Taiwan
3. School of Medicine, Tzu Chi University, Hualien, Taiwan
4. Department of Family Medicine, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
5. Department of Physical Medicine and Rehabilitation, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
6. Center for Aging and Health, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
7. Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan
8. Department of Ophthalmology and Visual Science, Tzu Chi University, Hualien, Taiwan