1. UNAIDS Data. Global HIV & AIDS statistics — 2020 fact sheet. Available from: https://www.unaids.org/en/resources/fact-sheet. Accessed April 20, 2021.
2. Chinese Center for Disease Control and Prevention. New progress in the fight against AIDS in China in 2019. Available from: http://www.nhc.gov.cn/jkj/s3586/201911/c2388ce70bdd404ea6dfcd886591784d.shtml. Accessed April 20, 2021.
3. UNAIDS Data 2019. Available from: https://www.unaids.org/en/resources/documents/2019/2019-UNAIDS-data. Accessed April 20, 2021.
4. Chinese Center for Disease Control and Prevention. About 3000 new cases of AIDS are reported each year among young students aged 15 to 24 years old. Available from: http://www.chinanews.com/gn/2019/07-31/8913131.shtml. Accessed April 20, 2021.