Article History
Received: 23 March 2022
Accepted: 24 July 2022
First Online: 30 August 2022
Declarations
:
: All authors have no competing interests to declare.
: All procedures performed in studies involving human participants were performed in accordance with the ethical standards of the institutional and/or national research committee at which the studies were conducted (institutional review board approval no. 2101, June 21, 2021) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: As this was a retrospective and non-interventional study, we adopted an opt-out method instead of written informed consent. We provided patients with the opportunity to opt-out by announcing the purpose of the study and the individual data required for the study on the website of Shinkohkai Murakami Kinen Hospital, Murakami, Niigata 958–0034, Japan.