Funding for this research was provided by:
Natural Science Foundation of Ningbo Municipality (2018A610403, 2016A610181)
Ningbo Health Branding Subject Fund (PPXK2018-10)
Article History
Received: 21 November 2020
Accepted: 22 January 2021
First Online: 15 February 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.