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Authors
Yahikozawa, Hiroyuki
Yoshida, Kunihiro
Sato, Shunichi
Hanyu, Norinao
Doi, Hiroshi
Miyatake, Satoko
Matsumoto, Naomichi
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Article History
Received: 12 November 2014
Revised: 22 January 2015
Accepted: 1 February 2015
First Online: 26 March 2015
Competing interests
: The authors declare no conflict of interest.
