Zhang, Lei
Ma, Wang
Liu, Yuanbao
Wang, Yong
Sun, Xiang
Hu, Ying
Deng, Xiuying
Lu, Peishan
Tang, Fenyang
Wang, Zhiguo
Zhou, Minghao
Funding for this research was provided by:
National Natural Science Foundation of China (81502860)
Jiangsu Provincial Medical Youth Talent (QNRC2016547)
the “333” Project of Jiangsu Province (BRA2017538)
Article History
Received: 21 July 2018
Accepted: 1 November 2018
First Online: 14 November 2018
Ethics approval and consent to participate
: The study was approved by the Medical Ethics Committee of the Jiangsu Provincial Center for Disease Control and Prevention (No: SL2015-B015–02). Written informed consent was obtained from the parents/guardians of the children before enrolment.
: Not applicable.
: The authors declare that they have no competing interests.
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