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Authors
Zeng, Mengru
Liu, Yu
Liu, Fuyou
Peng, Youming
Sun, Lin
Xiao, Li
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Article History
Received: 11 April 2020
Accepted: 17 June 2020
First Online: 13 July 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: The NHANES was approved by the NCHS Research Ethics Review Board (ERB). The data of ERB approval can be found at this website: ExternalRef removed. The approval numbers are protocol #98-12 for NHANES 1999–2004 and protocol #2005-06 for NHANES 2005–2006. Given it was an analysis of anonymous data, the Central South University Institutional Review Board waived the need for reviewing the study.
: All participants provided written informed consent in the NHANES.
