Guo, Meizhen
Su, Yuxi http://orcid.org/0000-0003-1904-5594
Article History
Received: 23 August 2020
Accepted: 15 February 2021
First Online: 24 February 2021
Ethics approval and consent to participate
: Children’s parents or the guardians signed the informed consent and approved the use of clinical data of their children. Children’s Hospital of Chongqing Medical University’s ethics committee approved the study.
: Not applicable.
: The authors declare that they have no competing interests.