Received: 28 October 2020
Accepted: 17 August 2022
First Online: 1 September 2022
: This study was approved by the Ethical Review Board of Asahikawa Kosei Hospital and was conducted in accordance with the Declaration of Helsinki. The requirement for obtaining patients’ informed consent was waived due to the retrospective nature of the study.
: Not applicable.
: The authors have no conflicts of interest to declare that are relevant to the content of this article.