Yamashita, Shunsuke
Kikkawa, Jun
Yanagisawa, Keiichi
Nagai, Takuro
Ishizuka, Kazuo
Kimoto, Koji http://orcid.org/0000-0002-3927-0492
Article History
Received: 8 March 2018
Accepted: 8 August 2018
First Online: 17 August 2018
Competing Interests
: The authors declare no competing interests.