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Authors
Zong, Zhanhong
Huang, Jianyuan
Sun, Xiaoming
Mao, Jingshu
Shu, Xingyu
Hearst, Norman
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Article History
Received: 11 February 2018
Accepted: 4 July 2018
First Online: 13 July 2018
Ethics approval and consent to participate
: Not applicable; this was a secondary analysis of de-identified data. Information regarding the approval and consent process for the 2014 National Dynamic Monitoring Survey on Migrants has been published previously [].
: Not applicable
: The authors declare that they have no competing interests.
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