Received: 26 September 2020
Accepted: 7 January 2021
First Online: 18 January 2021
Ethics approval and consent to participate
: The study was approved by the Institutional Review Boards of both Huashan Hospital and The First Affiliated Hospital of Shenzhen University. The ethics committee ruled that no formal consent from participants was required for this study since it was a survey.
: Not applicable.
: The authors declare that they have no competing interests.