- Correspondence to Dr Sun Young Shin, Department of Ophthalmology & Visual Science, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 505 Banpo-dong, Seocho-gu, Seoul, 137–701, Korea;
- Received August 28, 2013
- Revised December 5, 2013
- Accepted January 3, 2014
- First published January 23, 2014.
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