1. Department of Internal Medicine, National Taiwan University Hospital Yun-Lin Branch, Yun-Lin County, Taiwan.
2. Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan.
3. Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.
4. Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
5. Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu County, Taiwan.