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Authors
Uchinuma, Hiroyuki
Ichijo, Masashi
Harima, Noriyuki
Tsuchiya, Kyoichiro http://orcid.org/0000-0001-9829-1018
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Article History
Received: 8 March 2020
Accepted: 28 April 2020
First Online: 7 May 2020
Ethics approval and consent to participate
: The study was conducted in accordance with the tenets outlined in the Declaration of Helsinki. This study was approved by the institutional review board of the University of Yamanashi (#1996).The need for informed consent was waived by the institutional review board of the University of Yamanashi (#1996), in view of the retrospective and observational nature of the study. An opt-out approach was used with the disclosure of website (ExternalRef removed).
: Not applicable
: All authors have no conflict of interest.
