Yan, Kun-Wu
Tian, Xiao-Fei
Meng, Na
Liu, Wen-Zhan
Lu, Zhi-Min
Guo, Ming-Tao
Xiao, Bo
Funding for this research was provided by:
Health Commission Foundation of Hebei Province (20181642, 20181642, 20181642, 20181642, 20181642, 20181642, 20181642)
Article History
Received: 26 September 2021
Accepted: 18 January 2022
First Online: 24 January 2022
Declarations
:
: This study was approved by the ethics committee of Handan Frist Hospital, Hebei, China, The research was a retrospective study, and all data were collected from the hospital information system, and we have applied for exemption from informed consents. Because of the retrospective nature of the study, the requirement for informed consent was exempted by the ethics committee of Handan Frist Hospital. All procedures were conducted in accordance with the ethical standards of the 1964 Helsinki declaration and its later amendments.
: All persons who were seen in the video consent to publish itself.
: The authors declare that they have no competing interests.