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Authors
Kitamura, Mitsuru https://orcid.org/0000-0002-8335-9849
Oishi, Naoki https://orcid.org/0000-0001-8204-9518
Suzuki, Noriomi
Kojima, Takashi https://orcid.org/0000-0002-7492-165X
Nishiyama, Takanori https://orcid.org/0000-0002-7136-531X
Noguchi, Masuru
Hosoya, Makoto https://orcid.org/0000-0003-0331-3670
Ogawa, Kaoru https://orcid.org/0000-0002-2461-4125
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Article History
Received: 1 October 2020
Accepted: 27 November 2020
First Online: 1 January 2021
Compliance with ethical standards
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: The authors have no conflict of interest to disclose.
: This study was conducted in accordance with the approval of the ethics committee of the Keio University School of Medicine (approval no. JPRN-UMIN000015613). We followed the Ethical Principles for Medical Research Involving Human Subjects expressed in the Declaration of Helsinki. Detail of this clinical research was displayed at a consultation room, and oral consent was collected from all participants. According to the Japan Ethical Guidelines for Medical and Health Research Involving Human Subjects, we were not necessarily required to obtain written informed consent. However, we notified the research subjects or made information public concerning the research, including the purpose of collection and utilization of research information, and that there is an opportunity to refuse participation or remove their data from the study after commencement. This information was also documented in each patient’s chart.
