1. Department of Ophthalmology, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea.
2. Department of Ophthalmology, Pusan National University School of Medicine, Busan, Korea.
3. Department of Ophthalmology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea.
4. Department of Ophthalmology, Kosin University College of Medicine, Busan, Korea.