Matsumoto, Yasuhiko
Ishii, Masaki
Hayashi, Yohei
Miyazaki, Shinya
Sugita, Takuya
Sumiya, Eriko
Sekimizu, Kazuhisa
Article History
Received: 10 November 2014
Accepted: 9 April 2015
First Online: 29 May 2015
Competing interests
: The authors declare no competing financial interests.