Li, Xueqian
Tang, Mengmeng
Yao, Xingfeng
Zhang, Nan
Fan, Jianfeng
Zhou, Nan
Sun, Qiang
Chen, Zhi
Meng, Qun
Lei, Lei
Zhang, Hejia
Ling, Chen
Hua, Lin
Chen, Xiangmei
Liu, Xiaorong
Funding for this research was provided by:
the Research on the Application of Capital Clinical Characteristics Program of Beijing Municipal Science and Technology Commission (No. Z161100000516106)
the Capital Health Research and Development of Special Grant (No. 2016-2-2094)
the Project of Beijing Science and Technology Commission (No. D181100000118006)
Article History
Received: 17 May 2019
Accepted: 13 August 2019
First Online: 29 August 2019
Compliance with ethical standards
:
: The authors declare that no conflicts of interest exist.
: The study was approved by the ethics committee of Beijing Children’s Hospital, China. The Ethics Committee specifically stated that informed consent was not required because this study was retrospective and the data analyzed anonymously.