1. Department of Ophthalmology, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
2. College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
3. Department of Optometry, Chung Hwa University of Medical Technology, Tainan 71703, Taiwan
4. Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
5. Health Information and Epidemiology Laboratory, Chang Gung Memorial Hospital, Chiayi Branch, Chiayi 61363, Taiwan
6. Department of Nursing, Chang Gung University of Science and Technology, Chiayi 61363, Taiwan