Tsuyumu, Matsusato http://orcid.org/0000-0002-3971-775X
Tsurumoto, Tadao
Iimura, Jiro
Nakajima, Tsuneya
Kojima, Hiromi
Article History
Received: 3 July 2019
Revised: 28 January 2020
Accepted: 5 February 2020
First Online: 19 February 2020
Compliance with ethical standards
:
: The authors 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.
: Formal consent was not required for this study.