- Correspondence to Professor Hidenori Takahashi, Department of Ophthalmology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi 329-0431, Japan;
- Received February 9, 2017
- Revised July 6, 2017
- Accepted July 11, 2017
- First published August 1, 2017.
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