Iuchi, Katsuya
Imoto, Akemi
Kamimura, Naomi
Nishimaki, Kiyomi
Ichimiya, Harumi
Yokota, Takashi
Ohta, Shigeo
Article History
Received: 13 July 2015
Accepted: 2 December 2015
First Online: 7 January 2016
Competing interests
: S.O. holds the right of a patent regarding a medical use of hydrogen gas.