1. Department of General Medicine, China Medical University Hospital, Taichung, Taiwan
2. Department of Ophthalmology, China Medical University Hospital, China Medical University, Taichung, Taiwan
3. School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
4. Department of Optometry, Asia University, Taichung, Taiwan
5. Graduate Institute of Clinical Medical Science, College of Medicine, China Medical University, Taichung, Taiwan
6. An-Shin Dialysis Center, NephroCare Ltd., Fresenius Medical Care, Taichung, Taiwan