- Correspondence to Wei Qi, Department of Gastroenterology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Gastroenterology, Hebei Institute of Gastroenterology, Shijiazhuang, China; ; Qi Zhang, Cell-gene Therapy Translational Medicine Research Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China;
- Received February 5, 2020
- Revised February 12, 2020
- Accepted February 13, 2020
- First published February 26, 2020.
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