Zhou, Fangjing
Ma, Ning
Su, Ruiting
He, Xiaoyu
Wang, Xiaona
Zhou, Yang
Shi, Jing
Funding for this research was provided by:
Shanxi Health and Family Planning Commission Project (2020TD17)
Article History
Received: 9 June 2021
Accepted: 21 September 2021
First Online: 27 September 2021
Declarations
:
: NHANES protocol approved by NCHS Research Ethics Review Board, and obtained informed consent from all participants.
: Not applicable.
: The authors declare that they have no competing interests.