- Correspondence to Dr Kyung Rim Sung, Department of Ophthalmology, College of Medicine, University of Ulsan, Asan Medical Center, 388-1 Pungnap-2-dong, Songpa-gu, Seoul 138-736, Korea;
- Received June 18, 2015
- Revised August 5, 2015
- Accepted August 11, 2015
- First published August 28, 2015.
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