- Correspondence to Dr Yoshitsugu Inoue, Division of Ophthalmology and Visual Science, Faculty of Medicine, Tottori University, 36-1 Nishicho, Yonago Tottori 683-8504, Japan;
- Received 23 May 2012
- Revised 29 December 2012
- Accepted 3 January 2013
- Published online 29 January 2013.
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