Fu, Chunxu
Fan, Xuguo
Jiang, Shigang
Wang, Junsen
Li, Tong
Kang, Kai
Gao, Shijun
Article History
Received: 19 November 2021
Accepted: 21 January 2022
First Online: 5 February 2022
Declarations
:
: All procedures were performed in accordance with the Declaration of Helsinki. This retrospective study was approved by the Ethical Committee of the Third Hospital of Hebei Medical University. Informed consent to participate was obtained from all individual participants included in the study prior to initiating data collection.
: Not applicable.
: The authors all declare they have no conflicts of interest.