- Correspondence to Dr Daolin Tang, Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA; ; Dr Rui Kang, Department of Surgery, UT Southwestern Medical Center, Dallas, Texas, USA;
- Received December 9, 2019
- Revised July 3, 2020
- Accepted July 14, 2020
- First published August 14, 2020.
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