Han, Lin-Lin
Meng, Chen
Zhang, Zhong-Xiao
Tang, Xiao-Di
Ma, Jing
Li, Chang-Xiao
Article History
Received: 16 March 2022
Accepted: 11 August 2022
First Online: 2 September 2022
Declarations
:
: The study obtained approval from the Ethical Committees of the Children’ hospital affiliated to Shandong University (approval number: SDFE-IRB/T-2022006; date of approval: 11 March 2022). Informed written consents were obtained from the parents or guardians of the patients. All methods of this study were carried out in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no conflict of interest.