Funding for this research was provided by:
Sichuan Province Science and Technology Support Program (2019YFS0371)
Article History
Received: 9 June 2020
Accepted: 11 March 2021
First Online: 24 March 2021
Declarations
:
: This study was approved by the Regional Ethics Committee of our hospital, and due to its retrospective nature, informed consent was waived. The administrative permission was acquired by our team to access the data used in our research.
: Written informed consent was obtained from the patients’ parents/guardians to publish this study.
: The authors have no conflicts of interest relevant to this article to disclose.