Funding for this research was provided by:
[the Pediatric special project of pediatric subject collaborative development center of Beijing Municipal Hospital Administration (XTCX201823)
Gansu University of Chinese Medicine (JJ-2020-17)
Article History
Received: 25 September 2021
Accepted: 5 April 2022
First Online: 20 April 2022
Declarations
:
: The authors declare no conflict of interests.
: The study protocol was approved by the ethics committee of Beijing Tongren Hospital, Capital Medical University in China (TRECKY2021-015).
: This was a retrospective study, thus no informed consent was needed.