Ohfuji, S. http://orcid.org/0000-0002-6096-6881
Article History
Received: 5 August 2019
Accepted: 25 October 2019
First Online: 12 November 2019
Compliance with ethical standards
:
: The author declares that he has no competing interests.
: None
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.