1. From the Department of Ophthalmology, College of Medicine, Soonchunhyang University, Seoul, South Korea;
2. Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina;
3. Clinical Ophthalmology Research, Allergan, Irvine, California; and
4. Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina; 4Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, South Korea.