Sugata, Kenji
Yasunaga, Jun-ichirou
Miura, Michi
Akari, Hirofumi
Utsunomiya, Atae
Nosaka, Kisato
Watanabe, Yuko
Suzushima, Hitoshi
Koh, Ki-Ryang
Nakagawa, Masanori
Kohara, Michinori
Matsuoka, Masao
Article History
Received: 13 January 2016
Accepted: 16 May 2016
First Online: 2 June 2016
Competing interests
: The authors declare no competing financial interests.