Ji, Shuaiqi
Guan, Xiaohang
Ma, Lei
Huang, Pingping
Lin, Hao
Han, Rui http://orcid.org/0000-0003-2353-9386
Funding for this research was provided by:
qingdao municipal science and technology bureau (19-6-1-33-nsh)
Article History
Received: 23 January 2021
Accepted: 17 March 2022
First Online: 31 March 2022
Declarations
:
: Ethical approval was provided by the Ethics Committee of Affiliated Hospital of Qingdao University (QYFYWZLL 25820). Written informed consent was obtained from parents or guardians for minors to participate in this study.
: Not applicable.
: The authors declare that they have no competing interests.