Tian, Suochen
Wu, Min
Chang, Zhenqin
Wang, Yunxia
Zhou, Guijie
Zhang, Wenming
Xing, Junmin
Tian, Hui
Zhang, Xihong
Zou, Xiuli
Zhang, Lina
Liu, Mingxin
Chen, Juan
Han, Jian
Ning, Kang
Chen, Shuangfeng
Wu, Tiejun
Article History
Received: 22 June 2020
Accepted: 25 March 2021
First Online: 1 April 2021
Declarations
:
: The study was conducted in accordance with the principles of the Declaration of Helsinki, and the study protocol was approved by the ethics committee of Liaocheng People’s Hospital. The need for informed consent was waived on account of the retrospective nature of the study.
: Not applicable.
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.