1. Department of Ophthalmology, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea.
2. The Institute of Endocrinology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
3. The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea.