Zhou, Fubiao
Niu, Ningkui
Liang, Qiang
Chang, Yueliang
Shi, Jiandang
Wang, Zili
Article History
Received: 18 March 2021
Accepted: 11 February 2022
First Online: 19 February 2022
Declarations
:
: This retrospective review study involving human participants was in accordance with the ethical standards of the institutional and national research committee and Helsinki Declaration. The study was reviewed and approved by the Ethics Review Committee of the General Hospital of Ningxia Medical University. Informed consent was obtained from each patient’s guardian.
: Not applicable.
: All authors declare that they have no competing interests.