Funding for this research was provided by:
National Special Research Program for Important Infectious Diseases (2014ZX10001002-002-002)
National Special Research Program for Important Infectious Diseases (2017ZX10202102-002-002)
Received: 16 May 2018
Accepted: 25 February 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: All patients provided written informed consent and this study was approved by Ethics Committee of the First Affiliated Hospital, College of Medicine, Zhejiang University. (reference number 2014320). All procedures and methods were performed in accordance with the relevant international guidelines and regulations in order to reduce physical discomfort of the subjects.
: Not applicable.
: The authors declare that they have no competing interests.
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