Xue, Fengxia
Xu, Baoping
Shen, Adong
Shen, Kunling
Article History
Received: 25 December 2020
Accepted: 17 March 2021
First Online: 12 April 2021
Declarations
:
: The study was approved by the Ethics Committee of Beijing Children’s Hospital, Capital Medical University. Informed consent was waived by the Ethics Committee of Beijing Children’s Hospital, Capital Medical University due to the use of anonymized retrospective human data.
: Not applicable.
: The authors declare that they have no competing interests.