Zhang, Aijun
Song, Yanjun
Cui, Xiangdan
Wang, Baihui
Li, Ruyuan
Funding for this research was provided by:
Qingdao Municipal Medical Research Guidance Plan in 2019 (2019-WJZD161)
Article History
Received: 2 November 2021
Accepted: 9 April 2022
First Online: 5 May 2022
Declarations
:
: Aijun Zhang, Yanjun Song, Xiangdan Cui, Baihui Wang, and Ruyuan Li have no conflict of interest to disclose.
: This study was approved by the Ethics Committee of Qilu Hospital of Shandong University [No: KYLL-2020043], and the need for informed consent was waived by the review board due to the retrospective nature of this study.