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Authors
Ahiko, Yuka
Shida, Dai https://orcid.org/0000-0003-3294-1924
Horie, Tomoko
Tanabe, Taro
Takamizawa, Yasuyuki
Sakamoto, Ryohei
Moritani, Konosuke
Tsukamoto, Shunsuke
Kanemitsu, Yukihide
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Article History
Received: 1 February 2019
Accepted: 30 September 2019
First Online: 6 November 2019
Ethics approval and consent to participate
: This retrospective study was approved by the Institutional Review Board (IRB) of the National Cancer Center Hospital (IRB code: 2017–437). It was determined to be a retrospective analysis of de-identified data, and was determined to be exempt from requiring written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
