Li, Tao
Zhang, Shuaiming
Tan, Zangwen
Dai, Yaohua
Funding for this research was provided by:
Beijing Bohui Innovation Technology Co., Ltd (2004)
Article History
Received: 29 October 2018
Accepted: 21 May 2019
First Online: 8 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the Ethics Committee of the Capital Institute of Pediatrics.
: The funding agencies have no role in the study design, implementation, data analysis, and interpretation.