Nakashima, Akio
Yokoyama, Keitaro
Kawanami, Daiji
Ohkido, Ichiro
Urashima, Mitsuyoshi
Utsunomiya, Kazunori
Yokoo, Takashi http://orcid.org/0000-0003-1838-7998
Article History
Received: 28 March 2018
Accepted: 3 September 2018
First Online: 18 September 2018
Competing Interests
: The authors declare no competing interests.