Funding for this research was provided by:
JSPS KAKENHI (26350827)
Article History
Received: 21 August 2017
Accepted: 22 January 2018
First Online: 26 February 2018
Ethics Approval and Consent to Participate
: All procedures performed involving human participants were conducted 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.
: Consent to publish was obtained from all the participants.
: Masako Hoshikawa, Sunao Uchida, and Yuichi Hirano declare no conflicts of interest.
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