Tanaka, Hidekazu
Article History
Received: 1 March 2019
Accepted: 9 April 2019
First Online: 27 April 2019
Compliance with ethical standards
:
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation and with the Helsinki Declaration of 1964 and later versions.
: The author declares that there are no conflicts of interest.