- Correspondence to Professor Zhechuan Mei, Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China; ; Professor An Zhang, Department of Critical Care Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China; ; Dr Guodan Yuan, Department of Critical Care Medicine, Chongqing Public Health Medical Center, Chongqing 400036, China;
- Received May 21, 2020
- Revised June 12, 2020
- Accepted June 13, 2020
- First published June 22, 2020.
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