Takamatsu, Susumu http://orcid.org/0000-0002-2289-0396
Article History
Received: 17 May 2018
Accepted: 25 May 2018
First Online: 21 August 2018
Compliance with ethical standards
:
: The author has no conflict of interest to declare.
: This article does not contain any studies with human participants or animals performed by the author.