1. Department of Ophthalmology, Gyeongsang National University School of Medicine, Jinju, Korea.
2. Department of Ophthalmology, Gyeongsang National University Changwon Hospital, Changwon, Korea.
3. Danggam Choi Eye Clinic, Busan, Korea.
4. Department of Ophthalmology, Pusan National University School of Medicine, Yangsan, Korea.