Funding for this research was provided by:
Zhejiang Province Public Welfare Technology Application Research Project (2015C33145)
Received: 20 March 2020
Accepted: 21 September 2020
First Online: 23 November 2020
Ethics approval and consent to participate
: The respondents were anonymous, voluntary and consent for participation. All study procedures were approved by the Ethics Committee of Hangzhou Medical College.
: Not applicable.
: The authors declare that they have no competing interests.