Okamoto, Yoshinori
Yoshida, Naoko
Suzuki, Toru
Shimozawa, Nobuhiro
Asami, Maki
Matsuda, Tomonari
Kojima, Nakao
Perry, Anthony C. F.
Takada, Tatsuyuki
Article History
Received: 29 June 2015
Accepted: 4 December 2015
First Online: 11 January 2016
Competing interests
: The authors declare no competing financial interests.