Yang, Xingzhe https://orcid.org/0000-0003-4271-7256
Article History
Received: 4 March 2018
Accepted: 3 July 2018
First Online: 11 July 2018
Ethics approval
: Given the study was a comprehensive research rather than animal experimental research, no need for the approval of the ethics committee. The findings and conclusions in this report are those of the author and do not necessarily represent the official position of BMC Infectious Diseases.
: Not applicable.
: The author declares that he/she has no competing interests.
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