1. Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan 333, Taiwan
2. College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
3. Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan 333, Taiwan
4. Department of Education, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan 333, Taiwan
5. MidAtlantic Retina, The Retina Service of Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA
6. Department of Ophthalmology, Edward S. Harkness Eye Institute, Columbia University Medical Center, New York, NY 10032, USA
7. Department of Ophthalmology, Mackay Memorial Hospital, Taipei 104, Taiwan
8. Department of Oncology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan 333, Taiwan
9. Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan 333, Taiwan
10. Department of Ophthalmology, Keelung Chang Gung Memorial Hospital, Keelung 204, Taiwan
11. Department of Ophthalmology, Jen-Ai Hospital Dali Branch, Taichung 412, Taiwan
12. Department of Ophthalmology, Xiamen Chang Gung Memorial Hospital, Xiamen 361000, China