- Correspondence to Dr Ryo Asaoka, Department of Ophthalmology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan;
- Received March 19, 2013
- Revised June 18, 2013
- Accepted July 27, 2013
- First published August 21, 2013.
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