Oda, Hirotsugu
Sato, Tatsuhiro
Kunishima, Shinji
Nakagawa, Kenji
Izawa, Kazushi
Hiejima, Eitaro
Kawai, Tomoki
Yasumi, Takahiro
Doi, Hiraku
Katamura, Kenji
Numabe, Hironao
Okamoto, Shinya
Nakase, Hiroshi
Hijikata, Atsushi
Ohara, Osamu
Suzuki, Hidenori
Morisaki, Hiroko
Morisaki, Takayuki
Nunoi, Hiroyuki
Hattori, Seisuke
Nishikomori, Ryuta
Heike, Toshio
Article History
Received: 2 March 2015
Revised: 22 April 2015
Accepted: 27 April 2015
First Online: 10 June 2015
Competing interests
: The authors declare no conflict of interest.