1. Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
2. Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Republic of Korea
3. Department of Biomedicine and Health Science, The Catholic University of Korea, Seoul, Republic of Korea
4. Department of Statistics and Actuarial Science, Soongsil University, Seoul, Republic of Korea