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Authors
Shimada, Norimitsu
Ohge, Hiroki
Kitagawa, Hiroki
Yoshimura, Kosuke
Shigemoto, Norifumi
Uegami, Shinnosuke
Watadani, Yusuke
Uemura, Kenichiro
Takahashi, Shinya
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Article History
Received: 6 January 2021
Accepted: 10 May 2021
First Online: 19 May 2021
Declarations
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: All methods were performed in accordance with the Declaration of Helsinki. This study was approved by the Hiroshima University Institutional Review Board (E-1636). The need for informed consent was waived by the Hiroshima University Institutional Review Board. All participants received information about the conduct of the research, including the purpose of the study, and were given the opportunity to decline participation in the study. Because the opt-out method can be used without informed consent from the patients who had completed the surgery, the information was published on the internet.
: Not applicable.
: The authors declare that they have no competing interests.
