Ohashi, Nobuhide https://orcid.org/0000-0002-2345-4350
Koike, Kazushige
Sakai, Kurumi
Nishiyama, Koyo
Sasaki, Takanori
Ogi, Kazuhiro
Dehari, Hironari
Kobayashi, Nobumichi
Miyazaki, Akihiro
Article History
Received: 27 June 2022
Accepted: 31 August 2022
First Online: 16 September 2022
Declarations
:
: The authors declare that they have no conflict of interest.
: This retrospective study was conducted according to the principles of the Helsinki Declaration of 1975, as revised in 2008, and approved by Sapporo Medical University’s Institutional Review Board (approval number 332-53).
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008 (5). Informed consent was obtained from all patients for being included in the study. Informed consent for the use of data was obtained from patients through an opt-out document, and explanatory documents were posted on the information boards and website of our institution.