1. Department of Ophthalmology, Dongguk University, Ilsan Hospital, Goyang, Gyunggido, South Korea
2. Department of Ophthalmology and Visual Sciences, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, United States
3. Department of Ophthalmology, Seonam University, Myongji Hospital, Goyang, Gyunggido, South Korea