Received: 7 March 2021
Accepted: 21 February 2022
First Online: 26 February 2022
: The study protocol was approved by the Ethics Committee of The Second Hospital, Cheeloo College of Medicine, Shandong University. All the patients and their parents written informed consent. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no competing interests.