Yokoyama, Nobuhiko
Matsunobu, Tomoya
Matsumoto, Yoshihiro
Fukushi, Jun-ichi
Endo, Makoto
Hatano, Mihoko
Nabeshima, Akira
Fukushima, Suguru
Okada, Seiji
Iwamoto, Yukihide
Article History
Received: 16 November 2016
Accepted: 21 February 2017
First Online: 28 March 2017
Competing interests
: The authors declare no competing financial interests.