Geng, Bailu
Ding, Xueli
Li, Xiaoyu
Liu, Hua
Zhao, Wenjun
Gong, Haihong
Tian, Zibin
Guo, Jing
Article History
Received: 12 December 2022
Accepted: 17 April 2023
First Online: 27 April 2023
Declarations
:
: The study was conducted in accordance with the Declaration of Helsinki (as revised in 2013). This study was approved by the Ethics Committee of the Affiliated Hospital of Qingdao University (NO. QYFY WZLL 27363). The need for written informed consent was waived by the Ethics Committee of the Affiliated Hospital of Qingdao University due to retrospective nature of the study. The study protocol has been registered in the Chinese Clinical Trial Registry (identifier: ChiCTR2200065103).
: Not applicable.
: The authors have no relevant financial or non-financial interests to disclose.