- Correspondence to Professor Masaru Takeuchi, Department of Ophthalmology, National Defense Medical College, 3-2 Namiki, Tokorozawa City, Saitama 359-8513, Japan;
- Received October 3, 2013
- Revised December 24, 2013
- Accepted January 8, 2014
- First published February 26, 2014.
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