Nishikawa, Keizo
Iwamoto, Yoriko
Kobayashi, Yasuhiro
Katsuoka, Fumiki
Kawaguchi, Shin-ichi http://orcid.org/0000-0002-9100-3885
Tsujita, Tadayuki
Nakamura, Takashi
Kato, Shigeaki
Yamamoto, Masayuki
Takayanagi, Hiroshi
Ishii, Masaru
Article History
Received: 5 July 2014
Accepted: 20 November 2014
First Online: 23 February 2015
Competing interests
: The authors declare no competing financial interests.