Han, Jinbao
Hao, Zenghui
Wang, Long
Yao, Ting
Fan, Wei
Zhao, Zheng
Huang, Liuming
Xu, Zhilin
Article History
Received: 13 April 2022
Accepted: 5 July 2022
First Online: 11 July 2022
Declarations
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This study was approved by the Ethics Committee of the First Affiliated Hospital of Harbin Medical University and the Seventh Medical Center of PLA General Hospital. Given the retrospective nature of this study, the ethics committee approved the waiver of parents’ written consent. The waiver will not adversely affect the rights and welfare of the patients and all data relating to patients are kept anonymized.
: Not applicable.
: The authors declare that they have no competing interests.