Zhang, Lei https://orcid.org/0000-0002-1110-9015
Shao, Feng https://orcid.org/0000-0002-4107-3201
Li, Lijun https://orcid.org/0000-0003-3651-3441
Article History
Received: 15 August 2020
Accepted: 10 September 2020
First Online: 17 September 2020
Compliance with ethical standards
:
: <b>None</b>
: NHANES was approved by the National Center for Health Statistics Research Ethics Review Board.