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Authors
Watanabe, Shunsuke
Hoshina, Takayuki
Kojiro, Masumi
Kusuhara, Koichi
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Article History
Received: 3 December 2020
Accepted: 22 February 2021
First Online: 4 March 2021
Declarations
: <b>Ethics approval</b>Our retrospective study was approved by the Institutional Review Board of Kitakyushu General Hospital.
: For this type of study, formal consent is not required. No identifying information is included.
: The authors state that they have no conflicts of interest.
