Cui, Mingming
Lu, Xiao-Lin
Lyu, Yan-Yu
Wang, Fang
Xie, Xiao-Lu
Cheng, Xi-Yue
Zhang, Ting http://orcid.org/0000-0002-6100-8327
Funding for this research was provided by:
National Natural Science Foundation of China (81771584, 81701441)
The Special Fund of the Pediatric Medical Coordinated Development Center of Beijing Hospitals Authority (XTZD20180402)
The National Key Basic Research Program of China (2018YFC1002502, 2018YFC1002503)
Article History
Received: 23 February 2020
Accepted: 24 May 2021
First Online: 21 June 2021
Declarations
:
: This study was approved by the Ethics Committee of Capital Institute of Pediatrics under the code(NO. SHERLL2019034). We followed all Helsinki declaration and national ethical standards. All participants were ensured about the matter of confidentiality, verbal consent and written consent of the participants who was witnessed and formally recorded, was obtained before data collection.
: Not applicable.
: The authors declare no competing interests.