1. Department of Ophthalmology, Inje University College of Medicine, Busan, Korea.
2. Department of Ophthalmology, Pusan National University School of Medicine, Yangsan, Korea.
3. Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.
4. Department of Ophthalmology, Gyeongsang National University School of Medicine, Jinju, Korea.