Xu, Lin
Lyu, Wenyuan
Wei, Penghui
Zheng, Qiang
Li, Chengwei
Zhang, Zheng
Li, Jianjun
Article History
Received: 27 May 2022
Accepted: 26 August 2022
First Online: 7 September 2022
Declarations
:
: Ethical approval was obtained from the Medical Ethics Committee of Qilu Hospital of Shandong University (Qingdao) (KYLL-202205). The requirement for written informed consent from each patient was waived because of the study's retrospective design, and the Medical Ethics Committee of Qilu Hospital of Shandong University (Qingdao) approved the waiver. Ethics approval was obtained on February 24, 2022, and data collection commenced in March 1, 2022. All procedures were in accordance with the tenets of the Helsinki Declaration.
: Not applicable.
: The authors declare no competing interests.