- Correspondence to Dr Junjie Xu, NHC Key Laboratory of AIDS Immunology (China Medical University), National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, 110001, China, Shenyang, China;
- Received December 22, 2019
- Revised March 30, 2020
- Accepted April 14, 2020
- First published May 5, 2020.
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