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The remaining authors have no conflicts of interest to declare.","order":1,"name":"Ethics","label":"Conflict of interest","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"This study was approved by the Institutional Review Board of the Japanese Red Cross Oita Hospital (Approval No. 296) and was conducted in accordance with the Declaration of Helsinki. The requirement for written informed consent was waived because of the retrospective study design. Patients were given the opportunity to opt out via public disclosure.","order":2,"name":"Ethics","label":"Consent to Participate","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Not applicable.","order":3,"name":"Ethics","label":"Animal studies","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"During the preparation of this study, the authors used ChatGPT (GPT-5.2, OpenAI) for specific technical assistance, including drafting the initial Python code, improving the sentence structure for clarity, and general proofreading. These AI tools were used only as writing and programming aids, with all scientific conceptualizations, interpretations of results, and conclusions being exclusively the author\u2019s work. After using these services, the author reviewed and edited the content as required and took full responsibility for its publication.","order":4,"name":"Ethics","label":"Declaration of generative AI in the manuscript preparation process","group":{"name":"EthicsHeading","label":"Declarations"}}]}}