- Correspondence to Dr Tongda Xu, Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China; ; Dr Dongye Li, Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, Jiangsu, China;
- Received September 28, 2019
- Revised May 9, 2020
- Accepted May 15, 2020
- First published June 19, 2020.
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