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Authors
Iwano, Shingo https://orcid.org/0000-0002-3256-0390
Umakoshi, Hiroyasu
Kamiya, Shinichiro
Yokoi, Kohei
Kawaguchi, Koji
Fukui, Takayuki
Naganawa, Shinji
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Funding
Funding for this research was provided by:
the Japanese Ministry of Education, Culture, Sports, Science and Technology (15K09919)
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Article History
Received: 29 January 2019
Accepted: 26 May 2019
First Online: 7 June 2019
Ethics approval and consent to participate
: This retrospective study was approved by our Institutional Review Board, and written informed consent was waived (approval no. 2017–0437).
: Not applicable.
: The authors declare that they have no competing interests.
