1. Department of Medical Education, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
2. Department of Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
3. Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
4. Department of Medicine, Chang Gung University College of Medicine, Taoyuan, Taiwan
5. Department of Ophthalmology, Jen-Ai Hospital, Dali Branch, Taichung, Taiwan
6. Taiwan Center for Tissue Engineering, Department of Medical Research and Development, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan