Chen, Hongyu
Dong, Le
Article History
Received: 21 December 2021
Accepted: 13 October 2022
First Online: 19 November 2022
Declarations
:
: All methods were performed in accordance with the relevant guidelines and regulations. Written informed consents have been obtained from the parents of subjects for this study. This study protocol was conducted in compliance with the ethical principles of the Helsinki Declaration and approved by the Research Ethics Committee of the Xi’an No.9 Hospital. The Ethical Approval Number was CKY2019-184.
: Not applicable.
: The authors declare that they have no competing interests.