Yamamoto, Eiji
Matsunaga, Hiroshi
Onogi, Akio
Kajiya-Kanegae, Hiromi
Minamikawa, Mai
Suzuki, Akinori
Shirasawa, Kenta
Hirakawa, Hideki
Nunome, Tsukasa
Yamaguchi, Hirotaka
Miyatake, Koji
Ohyama, Akio
Iwata, Hiroyoshi
Fukuoka, Hiroyuki
Article History
Received: 15 October 2015
Accepted: 8 December 2015
First Online: 20 January 2016
Competing interests
: The authors declare no competing financial interests.