1. Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea.
2. Department of Ophthalmology, Chonbuk National University College of Medicine, Jeonju, Korea.
3. Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea.
4. Department of Ophthalmology, Seoul National University Boramae Hospital, Seoul, Korea.
5. Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea.