1. Department of Ophthalmology, Taipei City Hospital, Heping Fuyoy Branch, Taipei, Taiwan2Graduate Institute of Epidemiology and Preventive Medicine, Department of Public Health, College of Public Health, National Taiwan University, Taipei, Taiwan
2. Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
3. Graduate Institute of Epidemiology and Preventive Medicine, Department of Public Health, College of Public Health, National Taiwan University, Taipei, Taiwan