Lu, Xiaolin
Yang, Shuyan
Jie, Min
Wang, Shan
Sun, Chunrong
Wu, Lihua
Chang, Shaoyan
Pei, Pei
Wang, Shuowen
Zhang, Ting
Wang, Li
Article History
Received: 8 June 2021
Revised: 26 October 2021
Accepted: 2 December 2021
First Online: 21 December 2021
Competing interests
: The authors declare no competing interests.
: The study protocol was reviewed and approved by the local ethics committee and institute review board of the Capital Institute of Pediatrics, and all participants submitted informed consent.