- Correspondence to Dr Hui Jiang, Department of Urology, Peking university Third Hospital, Beijing 100191, China; and Dr Ling Wang, Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Beijing 100191, China;
- Received June 4, 2019
- Revised June 7, 2019
- Accepted June 8, 2019
- First published June 19, 2019.
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