Igai, Katsura
Itakura, Manabu
Nishijima, Suguru
Tsurumaru, Hirohito
Suda, Wataru
Tsutaya, Takumi
Tomitsuka, Eriko
Tadokoro, Kiyoshi
Baba, Jun
Odani, Shingo
Natsuhara, Kazumi
Morita, Ayako
Yoneda, Minoru
Greenhill, Andrew R.
Horwood, Paul F.
Inoue, Jun-ichi
Ohkuma, Moriya
Hongoh, Yuichi
Yamamoto, Taro
Siba, Peter M.
Hattori, Masahira
Minamisawa, Kiwamu
Umezaki, Masahiro
Article History
Received: 23 December 2015
Accepted: 27 July 2016
First Online: 24 August 2016
Competing interests
: The authors declare no competing financial interests.