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Authors
Chiba, Daisuke
Yamamoto, Yuji
Kimura, Yuka
Sasaki, Shizuka
Tsuda, Eiichi
Ishibashi, Yasuyuki
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Article History
Received: 2 May 2019
Accepted: 17 April 2020
First Online: 29 April 2020
Compliance with ethical standards
:
: All authors of the current study have no potential conflicts of interest.
: No funding was needed for this study.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The ethical committee of Hirosaki University Graduate School of Medicine approved this study (IRB No. 2011-251). Every patient was informed of the aims of the current study, as well as the risks, before agreeing to participate.
: Informed consent was obtained from all individual participants included in the study.
