Duan, Chuan Wei
Xu, Lin
Article History
Received: 24 October 2017
Accepted: 2 March 2018
First Online: 9 March 2018
Ethics approval and consent to participate
: The protocols for the conduct of NHANES III were approved by the institutional review board of the National Center for Health Statistics, Centers for Disease Control and Prevention. Informed written consent was obtained from all participants. The assay of stored serum specimens for the Hormone Demonstration Program was approved by the Institutional Review Boards at the Johns Hopkins Bloomberg School of Public Health and the National Center for Health Statistics, Centers for Disease Control and Prevention.
: Not applicable.
: The authors declare that they have no competing interests.
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