Hara, Munetsugu
Takahashi, Tomoyuki
Mitsumasu, Chiaki
Igata, Sachiyo
Takano, Makoto
Minami, Tomoko
Yasukawa, Hideo
Okayama, Satoko
Nakamura, Keiichiro
Okabe, Yasunori
Tanaka, Eiichiro
Takemura, Genzou
Kosai, Ken-ichiro
Yamashita, Yushiro
Matsuishi, Toyojiro
Article History
Received: 19 November 2014
Accepted: 8 May 2015
First Online: 15 June 2015
Competing interests
: The authors declare no competing financial interests.