Wakiyama, Yoshinari
Kumura, Ko
Umemura, Eijiro
Ueda, Kazutaka
Masaki, Satomi
Kumura, Megumi
Fushimi, Hideki
Ajito, Keiichi
Article History
Received: 4 August 2015
Revised: 15 September 2015
Accepted: 29 October 2015
First Online: 16 December 2015
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.