Liu, JiFeng https://orcid.org/0000-0002-7673-8461
Xiang, XiaoMei
Pu, ZhongShu
Long, Yong
Xiao, Dan
Zhang, WeiLu
Li, Qian
Li, XiTong
Li, SiYao
Shao, ZhongJun
Yang, XiaoLi
Xiong, YongMin
Funding for this research was provided by:
National Natural Science Foundation of China (81573104)
National Natural Science Foundation of China (81773372)
National Natural Science Foundation of China (30972517)
National Natural Science Foundation of China (81373058)
Article History
Received: 15 March 2018
Accepted: 17 December 2018
First Online: 7 January 2019
Ethics approval and consent to participate
: The Ethics Committee of Fourth Military Medical University (Grant No.: 2015018) approved this study. The study has got the written consent to participate from the participants. Data analyzed in this study were previously gathered and had been de-identified. Data is got from Xi’an CDC disease surveillance system which is not public, and this study got the written permission of use these data from Xi’an CDC.
: Not Applicable.
: The authors declare that they have no competing interests.
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