1. Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan, Republic of China.
2. Department of Ophthalmology, National Yang-Ming University School of Medicine, Taipei, Taiwan, Republic of China.
3. Department of Ophthalmology, Taipei Medical University, Taipei, Taiwan, Republic of China.
4. Department of Ophthalmology, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China.
5. Department of Ophthalmology, National Yang-Ming University Hospital, Yilan, Taiwan, Republic of China.