Utsumi, Masashi
Kitada, Koji
Tokunaga, Naoyuki
Kato, Takamitsu
Narusaka, Toru
Hamano, Ryosuke
Miyasou, Hideaki
Tsunemitsu, Yousuke
Otsuka, Shinya
Inagaki, Masaru
Article History
Received: 24 May 2021
Accepted: 5 October 2021
First Online: 13 October 2021
Declarations
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. The study design was approved by the Ethical Review Board of the National Hospital Organization Fukuyama Medical Center, Hiroshima, Japan (approval number: R2-34). The requirement for written informed consent was waived owing to the retrospective nature of the study by the Ethical Review Board of the National Hospital Organization Fukuyama Medical Center. All data were blinded before analysis.
: Not applicable.
: The authors declare that they have no competing interests.