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Authors
Sakurada, Tsutomu https://orcid.org/0000-0003-2434-0483
Fujishima, Rie
Yamada, Shohei
Kohatsu, Kaori
Kojima, Shigeki
Koitabashi, Kenichiro
Shibagaki, Yugo
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Article History
Received: 6 June 2020
Accepted: 4 August 2020
First Online: 11 August 2020
Compliance with ethical standards
:
: All the authors have declared no competing interest.
: This article does not contain any studies with animals performed by any of the authors.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee at which the studies were conducted (IRB approval number 4667) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was not necessary because of the retrospective nature of the study. Thus, the need for individual written informed consent was waived. However, a declaration of data was published on the website. The study information was published on the internet, since patients could use the official department websites to opt-out of the study if they did not want the data used for research purposes.
