- Correspondence to Professor Chia-Hung Kao, Graduate Institute of Clinical Medical Science and School of Medicine, College of Medicine, China Medical University, No 2, Yuh-Der Road, Taichung 404, Taiwan;
- Received October 6, 2014
- Revised December 8, 2014
- Accepted December 31, 2014
- First published January 22, 2015.
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