1. Department of Ophthalmology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C
2. Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan, R.O.C
3. Department of Ophthalmology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan, R.O.C
4. School of Public Health, National Defense Medical Center, Taipei, Taiwan, R.O.C
5. Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C
6. Department of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan, R.O.C