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 Ophthalmology, College of Medicine, Yeouido St. Mary’s Hospital, 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