Oshima, Ryuji
Hasegawa, Takafumi
Tamai, Keiichi
Sugeno, Naoto
Yoshida, Shun
Kobayashi, Junpei
Kikuchi, Akio
Baba, Toru
Futatsugi, Akira
Sato, Ikuro
Satoh, Kennichi
Takeda, Atsushi
Aoki, Masashi
Tanaka, Nobuyuki
Article History
Received: 3 February 2016
Accepted: 8 April 2016
First Online: 26 April 2016
Competing interests
: The authors declare no competing financial interests.