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Authors
Nagai, Takako
Tanimoto, Koji
Tomizuka, Yoshiaki
Uei, Hiroshi
Nagaoka, Masahiro
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Article History
Received: 15 February 2020
Accepted: 27 March 2020
First Online: 7 April 2020
Ethics approval and consent to participate
: The study protocol was reviewed and approved by the Committee on Ethics and the institutional review board of Nihon University Hospital and Osumi Hospital. Because this study was retrospective, the requirement for informed consent was waived.
: Not applicable.
: All authors declare that they have no competing interests.
