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Authors
Okuyama, Kohei https://orcid.org/0000-0002-5616-902X
Fukushima, Hiromasa
Naruse, Tomofumi
Yanamoto, Souichi
Tsuchihashi, Hiroki
Umeda, Masahiro
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Article History
Received: 3 August 2018
Accepted: 29 October 2018
First Online: 1 November 2018
Compliance with Ethical Standards
:
: The authors do not have any conflicts of interest to declare.
: This retrospective study followed the Declaration of Helsinki and ethics and the regional Ethical Review Board of Nagasaki University approved the study (Registration number; 17,091,115).
