- Correspondence to Dr Hung-Yu Lin, Department of Ophthalmology, Show Chwan Memorial Hospital, Changhua, Taiwan; and Professor Shun-Fa Yang, Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan;
- Received July 4, 2017
- Revised October 11, 2017
- Accepted November 5, 2017
- First published November 16, 2017.
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