1. Department of Ophthalmology, Gyeongsang National University College of Medicine, Jinju, Korea.
2. Department of Ophthalmology, Gyeongsang National University Hospital, Jinju, Korea.
3. Health Science Institute, Gyeongsang National University, Jinju, Korea.
4. Department of Ophthalmology, Chosun University College of Medicine, Gwangju, Korea.