Yamauchi, Koun http://orcid.org/0000-0003-4980-5689
Kato, Chisato http://orcid.org/0000-0003-1843-1581
Kato, Takayuki http://orcid.org/0000-0002-7210-9457
Article History
Received: 10 December 2018
Accepted: 22 January 2019
First Online: 28 January 2019
Compliance with ethical standards
:
: Koun Y, Chisato K, and Takayuki K declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.