Takafuji, Hiroya http://orcid.org/0000-0002-3448-0992
Hosokawa, Shinobu
Ogura, Riyo
Hiasa, Yoshikazu
Article History
Received: 3 September 2018
Accepted: 27 February 2019
First Online: 7 March 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study has been approved by the ethics standards of the institutional research, and the study was performed in accordance with the 1964 Declaration of Helsinki.