Kasai, Hirotake
Kawakami, Kunihiro
Yokoe, Hiromasa
Yoshimura, Kentaro
Matsuda, Masanori
Yasumoto, Jun
Maekawa, Shinya
Yamashita, Atsuya
Tanaka, Tomohisa
Ikeda, Masanori
Kato, Nobuyuki
Okamoto, Toru
Matsuura, Yoshiharu
Sakamoto, Naoya
Enomoto, Nobuyuki
Takeda, Sen
Fujii, Hideki
Tsubuki, Masayoshi
Kusunoki, Masami
Moriishi, Kohji
Article History
Received: 22 July 2015
Accepted: 19 October 2015
First Online: 16 November 2015
Competing interests
: The authors declare no competing financial interests.