Received: 18 May 2021
Accepted: 30 August 2021
First Online: 21 September 2021
: The NHANES survey protocol was approved annually by the NCHS Research Ethics Review Board, and all participants provided written informed consent. Therefore, human subjects’ approval was not necessary nor sought since this was a de-identified data-only study.
: Not applicable.
: The authors declare no conflict of interest.