Liu, Hui
Wang, Yun
Li, Mengya
Chen, Dan
Tang, Yuping
Article History
Received: 16 November 2021
Accepted: 15 February 2022
First Online: 14 March 2022
Declarations
:
: In this study, all methods were performed in accordance with the relevant guidelines and regulations. This present study was a prospective cohort study design, the study had been checked and approved by the ethical committee of Children's Hospital of Nanjing Medical University with approval number: (202001011–2). Furthermore, the informed consents had all been obtained from the guardians of included children.
: Not applicable.
: The all authors declare that they have no competing interests.