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Authors
Fujihira, A
Suzuki, T
Chang, M O
Moriyama, T
Kitajima, M
Takaku, H
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Article History
Received: 24 February 2014
Revised: 6 May 2014
Accepted: 27 May 2014
First Online: 10 July 2014
Competing interests
: The authors declare no conflict of interest.
