Wakamori, Masatoshi
Fujii, Yoshifumi
Suka, Noriyuki
Shirouzu, Mikako
Sakamoto, Kensaku
Umehara, Takashi
Yokoyama, Shigeyuki
Article History
Received: 17 August 2015
Accepted: 27 October 2015
First Online: 26 November 2015
Competing interests
: The authors declare no competing financial interests.