Article History
Received: 20 January 2022
Revised: 18 February 2022
Accepted: 3 April 2022
First Online: 11 April 2022
Compliance with ethical standard
:
: This study complied with the Declaration of Helsinki, and the institutional review board of Hiroshima City Hiroshima Citizens Hospital approved this study (approval no. 2021–101). The need to obtain informed consent from patients was waived in accordance with the regulations for retrospective cohort studies. Information for patients regarding this study was provided on the hospital website.
: None.