Miura, Chihiro
Komatsu, Ken
Maejima, Kensaku
Nijo, Takamichi
Kitazawa, Yugo
Tomomitsu, Tatsuya
Yusa, Akira
Himeno, Misako
Oshima, Kenro
Namba, Shigetou
Article History
Received: 18 March 2015
Accepted: 9 June 2015
First Online: 7 July 2015
Competing interests
: The authors declare no competing financial interests.