Haiyan, Ge
Jianming, Lai
Suqian, Tong
Dong, Qu
Shuang, Liu
Jin, Zhang
Article History
Received: 28 May 2021
Accepted: 15 December 2021
First Online: 7 January 2022
Declarations
:
: The study has been approved and granted an exemption from requiring informed consent by the regional ethics committee of the Capital Institute of Pediatrics (SHERLLM2021004). The study has been performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no conflicts of interest/competing interests.