1. Department of Ophthalmology, Seoul National University, College of Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
2. UCLA Stein Eye Institute, Division of Retinal Disorders and Ophthalmic Genetics, Department of Ophthalmology, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
3. Molecular Vision Laboratory, Portland, OR, USA
4. Department of Human Genetics, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA