Wang, Jia
Chen, Jingjing
Zhou, Ruizhi
Gao, Yuanxiang
Li, Jie
Funding for this research was provided by:
the Affiliated Hospital of Qingdao University
Article History
Received: 10 November 2021
Accepted: 8 April 2022
First Online: 19 April 2022
Declarations
:
: The Ethical Committee of Affiliated Hospital of Qingdao University approved this retrospective study and waived the requirement for written informed consent from the enrolled patients. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.