Ikeda, Yasumasa
Hamano, Hirofumi
Satoh, Akiho
Horinouchi, Yuya
Izawa-Ishizawa, Yuki
Kihira, Yoshitaka
Ishizawa, Keisuke
Aihara, Ken-ichi
Tsuchiya, Koichiro
Tamaki, Toshiaki
Article History
Received: 12 February 2015
Revised: 30 April 2015
Accepted: 12 May 2015
First Online: 2 July 2015
Competing interests
: The authors declare no conflict of interest.