Received: 11 June 2020
Accepted: 17 November 2020
First Online: 25 November 2020
Ethics approval and consent to participate
: The project was approved by the Ethics Committee for the Children’s Hospital affiliated with Chongqing Medical University. Informed consent was obtained from all the patients and their legal guardians via signed consent forms. And informed consent was obtained from the patients/guardians of the minors included in this study.
: Not applicable.
: The authors declare that they have no competing interests.