Funding for this research was provided by:
National Natural Science Foundation of China (81902753)
Natural Science Foundation of Guangdong Province (2019A1515010620, 2017A030313700)
2018 Research Project on Teaching Reform of Sun Yat-sen University Otolaryngology Teaching Team Construction Project (80000-18823601)
2018 Undergraduate Teaching Quality Construction Project of the First Affiliated Hospital of Sun Yat-sen University (80000-18842501)
Received: 30 March 2020
Accepted: 26 January 2021
First Online: 4 February 2021
Ethics approval and consent to participate
: Written consent was obtained from each of the participants. The study was approved by the Sun Yat-sen University Ethics Committee for Research and Publication.
: Not applicable.
: The authors declare that they have no competing interests.