Kang, Xiao-Hui
Wang, Wan
Cao, Ling
Funding for this research was provided by:
Merck Company Foundation (MISP40467)
Article History
Received: 29 January 2019
Accepted: 12 July 2019
First Online: 16 August 2019
Compliance with ethical standards
:
: This study was approved by the Ethics Committee of Capital Institute of Pediatrics. Signed informed consent was obtained from each child’s parent or legal guardian.
: No financial or non-financial benefits have been received or will be received from any party related directly or indirectly to the subject of this article.