Liu, Chenchen
Zhang, Yanzhen
Gu, Xiaopeng
Wei, Puying
Zhu, Dehai
Article History
Received: 27 November 2021
Accepted: 8 June 2022
First Online: 20 June 2022
Declarations
:
: This study was approved by the Ethics Committee of Peking University First Hospital and complied with the Declaration of Helsinki. Written informed consent was obtained from a parent or guardian for participants under 16 years old.
: Not applicable.
: The authors declare that they have no competing interests.