Received: 15 June 2021
Accepted: 23 December 2021
First Online: 12 January 2022
: The study was approved by the National Hospital Organization Fukuoka National Hospital Institutional Review Board for Clinical Research (#F3-3). Given the retrospective nature of the study, a written informed consent was not requested by the ethics committee.
: Not applicable.
: The authors declare that they have no competing interests.