Yamauchi, Shota
Takeuchi, Kenji
Chihara, Kazuyasu
Honjoh, Chisato
Kato, Yuji
Yoshiki, Hatsumi
Hotta, Hak
Sada, Kiyonao
Article History
Received: 14 September 2016
Accepted: 8 November 2016
First Online: 8 December 2016
Competing interests
: The authors declare no competing financial interests.