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Authors
Wang, Jinwen
Zuo, Huijuan
Chen, Xiaorong
Hou, Lei
Ma, Jixiang
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Funding
Funding for this research was provided by:
This work was supported by U.S. Centers for Disease Control and Prevention (5 U19 GH 000636)
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Article History
Received: 7 May 2019
Accepted: 4 September 2019
First Online: 13 September 2019
Ethics approval and consent to participate
: This study was conducted according to the recommendations of the Declaration of Helsinki and was approved by the institutional review boards of the sixth clinical institute, Capital Medical University, Beijing, China. Written consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
