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Authors
Nasu, Shingo https://orcid.org/0000-0003-1965-850X
Suzuki, Hidekazu
Shiroyama, Takayuki
Tanaka, Ayako
Samejima, Yumiko
Kanai, Tomohiro
Noda, Yoshimi
Morishita, Naoko
Okamoto, Norio
Hirashima, Tomonori
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Article History
Received: 19 May 2020
Accepted: 11 June 2020
First Online: 15 June 2020
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.
: Institutional review board (IRB) approval for this study was obtained from the Medical Research Ethics Committee of Osaka Habikino Medical Center. 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. Informed consent was waived by the IRB because of the retrospective nature of this study.
