Received: 16 December 2021
Revised: 15 March 2022
Accepted: 18 March 2022
First Online: 5 April 2022
: The study was carried out with the approval of the ethics committee of the University of Miyazaki Hospital (No. O-1030).
: Since this was a retrospective study, the requirement for obtaining informed consent from patients was waived.
: The authors declare that they have no competing interests.