Received: 17 May 2023
Accepted: 21 July 2023
First Online: 4 August 2023
: The authors declare that they have no competing interests.
: This study was conducted in accordance with the principles of the Declaration of Helsinki, and this study was approved by the Ethics Committee of Capital Institute of Pediatrics with waiver of informed consent (shell2022047). The requirement for informed consent was waived by the Ethics Committee of Capital Institute of Pediatrics because of the retrospective nature of the study.
: Not applicable.