- Correspondence to Dr Tetsuji Kitano, Department of Cardiology and Nephrology, Wakamatsu Hospital of the University of Occupational and Environmental Health, Kitakyushu 808-0024, Japan;
- Received September 10, 2020
- Revised November 20, 2020
- Accepted November 24, 2020
- First published December 14, 2020.
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