Yu, Shufeng
Wang, Caixia
Lei, Ke
Leng, Xuefei
Zhang, Lijuan
Tian, Fei
Chen, Zhihong
Article History
Received: 3 March 2022
Accepted: 26 August 2022
First Online: 19 September 2022
Declarations
:
: This study was performed according to the Declaration of Helsinki. Written informed consent to participate in the study was obtained from all the participants and/or from parents/leagal guardians of the participant. The research was approved by the Medical Ethics Committee of the Affiliated Hospital of Qingdao University.
: Informed consent for publication was obtained from all participants and/or thier legal guardians.
: The authors declare that they have no competing interests.