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Authors
Hamada, Masakazu
Kameyama, Hiroyasu
Iwai, Soichi
Yura, Yoshiaki
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Article History
Received: 17 March 2017
Revised: 12 May 2017
Accepted: 9 June 2017
First Online: 14 August 2017
Competing interests
: The authors declare no conflict of interest.
