Zhu, Yupeng
Fu, Wangxing
Huang, Yangyue
Sun, Ning
Peng, Yun
Article History
Received: 24 September 2021
Accepted: 23 November 2021
First Online: 1 December 2021
Declarations
:
: The study was approved by the Review Committee of Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health. All methods were carried out in accordance with relevant guidelines and regulations. This study was a retrospective case–control investigation approved by the Ethics Committee of hospital, and the requirement for the consent of patients was waived.
: Written informed consent for publication was obtained from all participants.
: The authors declare that they have no competing interests.