Wu, Lijun http://orcid.org/0000-0001-5876-8379
Gao, Liwang
Zhao, Xiaoyuan
Zhang, Meixian
Wu, Jianxin
Mi, Jie
Funding for this research was provided by:
The National Basic Research Program of China (2013CB530605)
The National Natural Science Foundation of China (81473062)
The Beijing Health System High-Level Technical Talents Training Fund (2015-3-083)
Article History
Received: 8 May 2017
Accepted: 9 January 2018
First Online: 16 January 2018
Ethics approval and consent to participate
: The BCAMS study was approved by the ethics committees of Capital Institute of Pediatrics. We obtained written informed consent from parents or guardians.
: Not applicable.
: The authors declare that they have no competing interests.
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