Received: 16 December 2020
Accepted: 10 June 2021
First Online: 22 June 2021
: All procedures described in the study were performed in accordance with the ethical standards of the institution (Shonan Kamakura General Hospital) and with the 1964 Helsinki Declaration. The Tokushukai Group Ethical Committee approved our retrospective analysis (TGE01400-024). Written informed consent for participation was not required. The study was based on an opt-out model of enrolment, which was permitted by the ethical committee.
: Not Applicable.
: The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.