Yan, Jiayu
Duan, Yanlong
Liu, Tingting
Guo, Jianlin
Peng, Chunhui
Pang, Wenbo
Zhang, Dan
Peng, Yun
Chen, Yajun
Article History
Received: 11 May 2021
Accepted: 12 October 2021
First Online: 4 December 2021
Declarations
:
: This study adheres to the ethical principles of the Declaration of Helsinki. It was approved by the Ethics Committee of Beijing Children’s Hospital (2021-E-054-R). For the presented retrospective data, the requirement to obtain informed consent was waived in accordance with the vote of the Ethics Committee of Beijing Children’s Hospital.
: Not applicable.
: The authors declare that they have no competing interests.