Shao, Peng
Guo, Shujuan
Li, Guimei http://orcid.org/0000-0002-1784-4555
Qin, Daogang
Li, Sen
Luan, Ying
Article History
Received: 1 April 2020
Accepted: 25 August 2020
First Online: 1 September 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethical Committee of Shandong Provincial Hospital. All patients and parents gave their written informed consent after full explanation of the purpose and nature of all procedures used.
: Not applicable.
: The authors declare that they have no competing interests.