Funding for this research was provided by:
This work was supported by the National Natural Science Foundation Program of China (NO.71804050, NO.71804050, NO.71804050)
Received: 13 April 2021
Accepted: 2 August 2021
First Online: 1 September 2021
: Conduction of this audit program had been performed in accordance with the Declaration of Helsinki, and reported to the Tongji Medical School Ethics Commission. Approval was obtained beforehand. Those who agreed to participate with informed consent were surveyed. Participant’s privacy and confidentiality were protected.
: Not applicable.
: The authors declare that they have no competing interests.