Zhang, Huifeng
Xu, Ying
Xu, Yaying
Article History
Received: 17 March 2024
Accepted: 19 April 2024
First Online: 24 April 2024
Declarations
:
: The National Health and Nutrition Examination Survey (NHANES) is a publicly available database and approved by the National Center for Health Statistics institutional review board. All participants provided written informed consent when they did the national survey in the United States. Ethical review and approval were waived for this study since secondary analysis did not require additional institutional review board approval.
: Not applicable.
: The authors declare no competing interests.