Ohfuji, S. http://orcid.org/0000-0002-6096-6881
Article History
Received: 8 January 2019
Accepted: 23 April 2019
First Online: 6 May 2019
Compliance with ethical standards
:
: The author declares that he has no competing interests.
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.