Washio, Takuro
Watanabe, Hironori
Ogoh, Shigehiko
Article History
Received: 21 October 2019
Accepted: 22 January 2020
First Online: 29 January 2020
Ethical approval and consent to participate
: 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. All the participants signed an informed consent form agreeing to submit to the procedures involved in the study.
: Not applicable.
: The authors declare that they have no competing interests.