Funding for this research was provided by:
National Nature Science Foundation of China (82073554)
Article History
Received: 9 March 2021
Accepted: 10 July 2021
First Online: 17 July 2021
Declarations
:
: The NHANES protocol was approved by the National Center for Health Statistics Institutional Review Board, and written informed consent was obtained.
: Not applicable
: The authors declare no competing interests.