1. Department of Ophthalmology, Myongji Hospital, Hanyang University College of Medicine, Goyang, South Korea.
2. Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, South Korea.
3. Integrated Major in Innovative Medical Science, Seoul National University College of Medicine, Seoul, South Korea.
4. Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.