Kumegawa, Kohei
Maruyama, Reo
Yamamoto, Eiichiro
Ashida, Masami
Kitajima, Hiroshi
Tsuyada, Akihiro
Niinuma, Takeshi
Kai, Masahiro
Yamano, Hiro-o
Sugai, Tamotsu
Tokino, Takashi
Shinomura, Yasuhisa
Imai, Kohzoh
Suzuki, Hiromu
Article History
Received: 20 March 2015
Accepted: 9 May 2016
First Online: 24 May 2016
Competing interests
: The authors declare no competing financial interests.