Funding for this research was provided by:
National Natural Science Foundation of China (81701565)
Basic-Clinical Scientific Research Cooperation Fund of Capital Medical University (17JL55)
Text and Data Mining valid from 2018-03-15
Received: 11 July 2017
Accepted: 1 March 2018
First Online: 15 March 2018
Ethics approval and consent to participate
: This study was reviewed and approved by the Ethics Committee of Beijing Children’s Hospital Affiliated to Capital Medical University. Written informed consent was obtained from all pregnant women at the time of enrolment for their blood to be used for research on maternal/infant infectious diseases.
: Not applicable.
: The authors declare that they have no competing interests.
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