Wakiyama, Yoshinari
Kumura, Ko
Umemura, Eijiro
Masaki, Satomi
Ueda, Kazutaka
Sato, Yasuo
Hirai, Yoko
Hayashi, Yoshio
Ajito, Keiichi
Article History
Received: 20 May 2017
Revised: 15 August 2017
Accepted: 24 August 2017
First Online: 1 November 2017
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.