Wang, Zheng
Chang, Heng-Rui
Liu, Zhen
Wang, Zhi-Wei
Ding, Wen-Yuan
Yang, Da-Long
Article History
Received: 24 July 2021
Accepted: 15 February 2022
First Online: 24 February 2022
Declarations
:
: The study was approved by the ethical committee of The Third Affiliated Hospital of Hebei Medical University. The study the need for written informed consent was waived by the ethical committee of The Third Affiliated Hospital of Hebei Medical University due to retrospective nature of the study. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: None of the authors has any potential conflict of interest.