- Correspondence to Dr Minako Kaido, Department of Ophthalmology, Keio University School of Medicine, Shinanomachi 35, Shinjuku-ku, Tokyo 160-8582, Japan;
- Received January 20, 2015
- Revised March 13, 2015
- Accepted March 31, 2015
- First published April 16, 2015.
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