Wang, Rong
Han, Jiying
Liu, Chuanyong
Wang, Lixiang
Article History
Received: 1 March 2022
Accepted: 5 July 2022
First Online: 19 July 2022
Declarations
:
: This study, with the use of the student survey, was identified as exempt from supervision by the Ethics Committee of Shandong University. Students were informed about the study and signed consent forms, and the informed written consent to participate was obtained. All procedures involving human participants were performed in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Not applicable.
: No conflicts of interest, financial or otherwise, are declared by the authors.