Received: 14 September 2020
Accepted: 8 February 2021
First Online: 26 February 2021
Ethics approval and consent to participate
: The National Center for Health Statistics approved the protocol for NHANES. Informed consent was taken from the participants before the survey. This study utilized NHANES data which are publicly available and de-identified, hence was deemed exempted from review by the institutions’ IRB.
: Not applicable.
: The authors declare that they have no competing interests.