Funding for this research was provided by:
beijing municipal administration of hospitals incubating program (PX2020034, PX2020034, PX2020034, PX2020034)
Article History
Received: 12 July 2021
Accepted: 4 April 2022
First Online: 19 April 2022
Compliance with ethical standards
:
: The authors declare no competing interests.
: Informed consent was obtained from all individual participants and/or parents/guardians included in the study.
: Ethical approval: 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 Helsinki declaration and its later amendments or comparable ethical standards.