Chen, Liang
Xie, Yu-Mei
Pei, Jian-Hao
Kuang, Jian
Chen, Hong-Mei
Chen, Zhong
Li, Zhong-Wen
Fu, Xiao-Ying
Wang, Long
Lai, Shui-Qing
Zhang, Shu-Ting
Chen, Zhi-Jiang
Lin, Jin-xin
Article History
Received: 22 December 2017
Accepted: 15 June 2018
First Online: 23 June 2018
Ethics approval and consent to participate
: All data for this study were retrieved from the National Health and Nutrition Examination Survey (NHANES) 2011–2012 [CitationRef removed]. The survey was administered by the National Center for Health Statistics (NCHS) of the Centers for Disease Control and Prevention (CDC) and approved by its Institutional Review Board. The NCHS designed NHANES and collected the data after receiving informed consent from either the participants or their parents. Survey data have been collected continuously since 1999.
: Yes.
: The authors declare that they have no competing of interest.
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