Yang, Weixia
Gui, Qifeng
Chen, Lufang
Xu, Keying
Xu, Zherong
Funding for this research was provided by:
the Zhejiang medical and health science project ((2015KYB157))
the Zhejiang science and technology project ((2013C33122))
Article History
Received: 14 November 2017
Accepted: 24 March 2018
First Online: 9 April 2018
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: Since all NHANES data are deidentified, data analysis does not require Internal Review Board (IRB) approval or signed informed consent by the study subjects.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Not applicable due to the use of deidentified data in the NHANES database.