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Article History

Received: 11 July 2022

Accepted: 30 August 2022

First Online: 1 December 2022

Declarations

:

: This paper is a single-center retrospective study on LLOM patients from one university hospital (Nippon Medical School Hospital, Tokyo, Japan). Written informed consent was obtained from all participants prior to performing the scan. (All participants are legal adults.) The study protocol was approved by the institutional ethics committee and classified as a non-interventional study. All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committees and the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This study was approved by the Ethics Committee of Nippon Medical School Hospital (approval no. B-2019-061).

: We followed the retrospective observational research information disclosure procedure (opt-out) of Nippon Medical School when obtaining informed consent from research participants, including permissions to publish research results at conferences and in academic journals. The use of opt-out consent is approved by the Ethics Committee of Nippon Medical School Hospital. The option to opt out is detailed on the hospital’s website.

: The authors declare no competing interests.