Received: 25 June 2021
Accepted: 25 October 2021
First Online: 4 November 2021
: This was a retrospective study conducted with the approval of the ethics committee of Osaka Medical Pharmaceutical University (No. 2736) and operated in compliance with the Helsinki Declaration. Informed consent was obtained by allowing patients to opt out of the study on the hospital website.
: Not applicable.
: The authors declare that they have no competing interests.