Watanabe, Toshio http://orcid.org/0000-0001-8705-7517
Article History
First Online: 28 August 2020
Compliance with ethical standards
:
: The author has no conflict of interest, including funding sources and/or any entity.
: The manuscript does not contain any studies performed by the author that include human participants or animals.
: Informed consent is not required for this type of study.