Funding for this research was provided by:
Zhejiang Province Public Welfare Technology Application Research Project (LGF20H260002)
Zhejiang Provincial Medicine and Health Science and Technology Plan (2020KY521)
Received: 17 February 2021
Accepted: 11 May 2021
First Online: 31 May 2021
: Informed consents were obtained from the defendant P1 and complainant P2. The study protocol was approved by the Ethics Committee of the Zhejiang Provincial Center for Disease Control and Prevention, and the study was carried out following the Helsinki Declaration of 1964.
: Not applicable.
: The authors declare that they have no competing interests.