Sasada, Shinsuke
Ushirozawa, Nobuko
Kobayashi, Noriko
Fujiwara, Yutaka
Tamura, Kenji
Yamamoto, Noboru
Article History
Received: 28 November 2016
Accepted: 24 January 2017
First Online: 1 February 2017
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: This work was not supported by any funding sources.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: For this type of study, formal consent is not required.