1. Department of Ophthalmology Sungkyunkwan University School of Medicine, Samsung Medical Center Seoul Republic of Korea
2. Department of Ophthalmology Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital Seoul Republic of Korea
3. Department of Biostatistics College of Medicine, The Catholic University of Korea Seoul Republic of Korea
4. Department of Neurology Sungkyunkwan University School of Medicine, Samsung Medical Center Seoul Republic of Korea
5. Department of Clinical Research Design & Evaluation Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University Seoul Republic of Korea