Hirano, Yasumitsu
Shimada, Mari
Kato, Kaichiro
Hiranuma, Chikashi
Douden, Kenji
Hattori, Masakazu
Taniguchi, Keizo
Article History
Received: 6 September 2017
Accepted: 19 October 2018
First Online: 24 October 2018
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.