Funding for this research was provided by:
National Natural Science Foundation of China (81702079, 81672014, 81600300)
Natural Science Foundation of Zhejiang Province (LQ 15H100001)
Fundamental Research Funds for the Central Universities (2017QNA7016)
Department of Education of Zhejiang Province (Y201738209)
China National Mega-Projects for Infectious Diseases (2017ZX10103008)
Text and Data Mining valid from 2019-07-13
Received: 26 January 2019
Accepted: 14 June 2019
First Online: 13 July 2019
Compliance with ethical standards
: We declare that all authors have no conflict of interest.
: This study conformed to the ethical guidelines of the 1975 Declaration of Helsinki and was approved by the Institutional Review Board of the First Affiliated Hospital of Zhejiang University.