Hirayama, Chikara
Mase, Keisuke
Iizuka, Tetsuya
Takasu, Yoko
Okada, Eiji http://orcid.org/0000-0001-5811-464X
Yamamoto, Kimiko
Article History
Received: 11 July 2017
Revised: 27 November 2017
Accepted: 12 December 2017
First Online: 23 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.