- Correspondence to Dr Ting-Wei Lin, Division of Cardiovascular Surgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan;
- Received October 9, 2017
- Revised November 23, 2017
- Accepted December 6, 2017
- First published January 11, 2018.
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