- Correspondence to Dr Takayuki Nagai, Department of Cardiology, Pulmonology, Hypertension, and Nephrology, Ehime University Graduate School of Medicine, Toon, Ehime 791-0295, Japan;
- Received August 1, 2017
- Revised October 10, 2017
- Accepted October 23, 2017
- First published November 9, 2017.
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