Fujiwara, Shunrou
Yoshioka, Yoshichika
Matsuda, Tsuyoshi
Nishimoto, Hideaki
Ogawa, Akira
Ogasawara, Kuniaki
Beppu, Takaaki
Article History
Received: 4 February 2016
Accepted: 18 October 2016
First Online: 7 November 2016
Competing interests
: The authors declare no competing financial interests.