He, Hailong
Fu, Jing http://orcid.org/0000-0002-2939-9479
Meng, Zhaojun
Chen, Weiwei
Li, Lei
Zhao, Xinyu
Article History
Received: 7 May 2020
Accepted: 12 November 2020
First Online: 25 November 2020
Ethics approval and consent to participate
: Ethics committee approval was obtained from the Institutional Review Board of Beijing Tongren Hospital, Capital Medical University (TRECKY2019–146) in accordance with the Declaration of Helsinki principles. Written informed consent forms were obtained and signed by all parents or guardians before the examinations.
: The authors declare that they agree to publish.
: The authors declare that co-author ‘Weiwei Chen’ is the member of Editorial Board in this section.