Nakamura, Michiko
Moriya, Kimihiko http://orcid.org/0000-0001-6161-9403
Nishimura, Yoko
Nishida, Mutsumi
Kudo, Yusuke
Kanno, Yukiko
Kitta, Takeya
Kon, Masafumi
Shinohara, Nobuo
Article History
Received: 10 September 2017
Accepted: 18 May 2018
First Online: 29 May 2018
Ethics approval and consent to participate
: The present study was approved by the Institutional Review Board of Hokkaido University Hospital and the necessity to obtain written consent was waived because of its retrospective nature. Administrative permissions were received from the Institutional Review Board of Hokkaido University Hospital for accessing medical records in this study. (Approval number: 016–0095).
: The authors declare that they have no competing interests.
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