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Authors
Masuyama, Akihiro https://orcid.org/0000-0001-9014-8129
Mochizuki, Satoshi
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First Online: 23 April 2018
Compliance with Ethical Standards
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: All procedures performed in the present study that involved 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.
: Written informed consent was obtained from all individual participants included in the present study.
: The authors declare that they have no conflict of interest.
