1. Division of Oncology, Department of Internal Medicine, Inje University Seoul Paik Hospital, Seoul, Korea
2. Department of Ophthalmology, Daegu Veterans Health Service Medical Center, Daegu, Republic of Korea
3. Department of Ophthalmology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
4. Department of Ophthalmology, Pusan National University Hospital, Busan, Republic of Korea
5. Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea