Ito, Yasuhiro http://orcid.org/0000-0002-7854-0360
Nishizawa-Yokoi, Ayako
Endo, Masaki
Mikami, Masafumi
Shima, Yoko
Nakamura, Nobutaka
Kotake-Nara, Eiichi
Kawasaki, Susumu
Toki, Seiichi
Article History
Received: 22 December 2016
Accepted: 29 September 2017
First Online: 30 October 2017
Competing interests
: The authors declare no competing financial interests.