Tao, Yuan
Jiang, Pengfei
Zhao, Ying
Song, Lihua
Ma, Yuntao
Li, Yixiao
Wang, Hong
Article History
Received: 25 July 2020
Accepted: 5 March 2021
First Online: 27 March 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: As a retrospective study, the Ethics Review Committee did not consider it necessary to obtain written informed consent forms from patients participating in this study.
: Ethical approval was waived by the Ethics Committee of Qilu Hospital of Shandong University in view of the retrospective nature of the study, and all the procedures being performed were part of the routine care.