Funding for this research was provided by:
National Natural Science Foundation of China (81701618/H1008)
Beijing Municipal Administration of Hospital’s Youth Programme (QML20171301)
Beijing Talents Fund (2014000021469G225)
Science Foundation of Capital Institute of Pediatrics (PY-2017-06)
Text and Data Mining valid from 2018-11-20
Received: 21 June 2018
Accepted: 23 October 2018
First Online: 20 November 2018
Ethics approval and consent to participate
: This Paper had ethics approval and consent to participate by Ethics Committee of the Capital Institute of Pediatrics, the number is KSSHERLLM2018002.
: Not applicable.
: The authors declare that they have no competing interests.
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