1. Doheny Eye Institute, Pasadena, CA, USA
2. Department of Ophthalmology, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Gyeonggi-do, Republic of Korea
3. Department of Ophthalmology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
4. Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA