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Authors
Miyata, Kenichi
Takemoto, Ai
Okumura, Sakae
Nishio, Makoto
Fujita, Naoya
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Article History
Received: 9 September 2016
Accepted: 12 May 2017
First Online: 22 June 2017
Competing Interests
: The authors declare that they have no competing interests.
