Nozaki, Tatsuo
Ishibashi, Jun-Ichiro
Shimada, Kazuhiko
Nagase, Toshiro
Takaya, Yutaro
Kato, Yasuhiro
Kawagucci, Shinsuke
Watsuji, Tomoo
Shibuya, Takazo
Yamada, Ryoichi
Saruhashi, Tomokazu
Kyo, Masanori
Takai, Ken
Article History
Received: 27 January 2015
Accepted: 8 February 2016
First Online: 25 February 2016
Competing interests
: The authors declare no competing financial interests.