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Article History
Received: 15 March 2020
Accepted: 20 November 2020
First Online: 19 January 2021
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest.
: This study was approved by the review board of Kurashiki Central Hospital and has been performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: The Hospital Ethics Committee granted permission to use pre-acquired anonymized patient data, and requirement for individual informed consent was waived.
: The Hospital Ethics Committee granted permission to use pre-acquired anonymized patient data, and requirement for individual informed consent was waived.
