Article History
Accepted: 7 August 2021
First Online: 14 August 2021
Declarations
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Biomedical Research Institutional Review Board of Beijing Normal University and with the 1964 Helsinki declaration and its later amendments or comparable ethical standard.
: Informed consent was obtained from all individual participants included in the study.
: The authors declare no competing interests.