1. From the Department of Ophthalmology, School of Medicine, the3Institute of Clinical Medicine, and the2Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan.
2. From the Department of Ophthalmology, School of Medicine, the2Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan.
3. Community Medicine Research Center and Institute of Public Health, National Yang Ming University, Taipei, Taiwan; and the