Tian, Tian
Lei, Yunping
Chen, Yongyan
Karki, Menuka
Jin, Lei
Finnell, Richard H.
Wang, Linlin https://orcid.org/0000-0002-2033-9277
Ren, Aiguo
Funding for this research was provided by:
National Natural Science Foundation of China (Grant No. 81773441)
Foundation for the National Institutes of Health (HD081216)
Article History
Received: 30 January 2020
Accepted: 25 April 2020
First Online: 30 April 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.
: The study protocol was approved by the institutional review board of Peking University (Beijing, China, IRB00001052-18082).
: Written informed consent was obtained from all of the mothers prior to the beginning of the investigation.