Received: 8 November 2020
Accepted: 1 June 2021
First Online: 9 June 2021
: This study was approved by the ethics committee of China Medical University. The participants were informed about the purpose of the study and, prior to the start of the study, were assured that their privacy would be protected. An anonymous self-administered questionnaire was completed by students voluntarily. Written informed consent was obtained from all participants. All methods in this study were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.