Funding for this research was provided by:
Sichuan Research Center for Sexual Sociology and Sexual Education (SXJYB1619)
Received: 11 August 2020
Accepted: 30 December 2021
First Online: 11 January 2022
: This study received approval from the Ethics Committee of The Affiliated Hospital of Southwest Medical University (No. KY2020151). Written informed consent was obtained from the participants’ guardians.
: Not applicable.
: The authors declare that they have no competing interests.