Fujita, Kazutoshi
Kume, Hideaki
Matsuzaki, Kyosuke
Kawashima, Atsunari
Ujike, Takeshi
Nagahara, Akira
Uemura, Motohide
Miyagawa, Yasushi
Tomonaga, Takeshi
Nonomura, Norio
Article History
Received: 7 October 2016
Accepted: 17 January 2017
First Online: 17 February 2017
Competing interests
: The authors declare no competing financial interests.