1. Department of Ophthalmology, Pusan National University Yangsan Hospital, Yangsan, Korea.
2. Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
3. Department of Ophthalmology, Pusan National University Hospital, Busan, Korea.
4. Medical institute, Pusan National University School of Medicine, Busan, Korea.