A structural equation modeling approach to investigate HIV testing willingness for men who have sex with men in China.

"Declarations Ethics approval and consent to participateThe study followed the Helsinki Declaration and was approved by the Ethics Committee of Chongqing Medical University (2019001, 28 May 2019). Informed consent was obtained from all subjects involved in the study. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This research was funded by the National Key Project for Infectious Diseases of the Ministry of Science and Technology of China, grant number 2018ZX10721102-005 (“Research on Improving Pre-exposure Preventive Drug Compliance of MSM Population Based on Intelligent Reminder System to Reduce New HIV Infection”)."