Nakayama, Tsuguhisa http://orcid.org/0000-0001-8761-9292
Okada, Naoko
Yoshikawa, Mamoru http://orcid.org/0000-0002-5908-1752
Asaka, Daiya
Kuboki, Akihito
Kojima, Hiromi
Tanaka, Yasuhiro
Haruna, Shin-ichi
Article History
Received: 2 June 2017
Accepted: 9 January 2018
First Online: 25 January 2018
Competing Interests
: The authors declare that they have no competing interests.