Takemoto, Kazuya
Nambu, Yoshihiro
Miyazawa, Toshiyuki
Sakuma, Yoshiki
Yamamoto, Tsuyoshi
Yorozu, Shinichi
Arakawa, Yasuhiko
Article History
Received: 14 May 2015
Accepted: 21 August 2015
First Online: 25 September 2015
Competing interests
: The authors declare no competing financial interests.