Yasuoka, Yuuri
Suzuki, Yutaka
Takahashi, Shuji
Someya, Haruka
Sudou, Norihiro
Haramoto, Yoshikazu
Cho, Ken W.
Asashima, Makoto
Sugano, Sumio
Taira, Masanori
Article History
Received: 30 August 2013
Accepted: 6 June 2014
First Online: 9 July 2014
Competing interests
: The authors declare no competing financial interests.