Funding for this research was provided by:
Natural Science Foundation of China (71273002, 71473064)
Received: 8 April 2020
Accepted: 20 July 2020
First Online: 25 July 2020
Ethics approval and consent to participate
: This study was reviewed and approved by the Research Ethics Committee of Harbin Medical University. Informed consent was obtained from all participants, which was in the form of online questionnaires and obtained through online responses of the participants. The informed consent form described the purpose and method of data collection and ensured that the data would be kept confidential. The Research Ethics Committee of Harbin Medical University approved the procedure for obtaining informed consent.
: Not Applicable.
: None to declare.