- Correspondence to Dr Chan Yun Kim, Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-752, Republic of Korea;
- Received July 19, 2015
- Revised September 25, 2015
- Accepted October 15, 2015
- First published November 5, 2015.
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