Kato, Souichiro
Goya, Eri
Tanaka, Michiko
Kitagawa, Wataru
Kikuchi, Yoshitomo
Asano, Kozo
Kamagata, Yoichi
Article History
Received: 19 October 2015
Accepted: 23 December 2015
First Online: 17 February 2016
Competing interests
: The authors declare no competing financial interests.