Funding for this research was provided by:
Shanghai Leading Academic Discipline Project of Public Health (GWV-10.1-XK14)
Received: 15 December 2020
Accepted: 26 March 2021
First Online: 6 April 2021
: This study was approved by the Research Ethics Committee of the School of Public Health, Fudan University (IRB#2020040817). Written informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no competing interests.