Funding for this research was provided by:
National Natural Science Foundation of China (71603176)
Sichuan Science and Technology Program (2019YJ0148)
Sichuan Provincial Foundation for AIDS Prevention and Control (2018-WJW-02)
the International Initiative on Spatial Life course Epidemiology
Received: 28 October 2020
Accepted: 17 November 2021
First Online: 11 December 2021
: This study was approved by the Ethics Committee of West China School of Public Health and West China Fourth Hospital, Sichuan University, and was in accordance with the Helsinki Declaration of 1964. All participants signed informed consent.
: Not applicable.
: The authors report no competing interests.