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Ohno, Nagata, and Toyama received a research grant from Canon Medical Systems Corporation, which also supported this work technically. Drs. Ohno and Takenaka received a research grant from Grants-in-Aid for Scientific Research from the Japanese Ministry of Education, Culture, Sports, Science and Technology (JSTS.KAKEN; No. 18K07675).Drs. Ohno and Toyama received research grants from Grants-in-Aid for Scientific Research from the Japanese Ministry of Education, Culture, Sports, Science and Technology (JSTS.KAKEN; No. 20K08037) and Smoking Research Foundation. Ms. Kaori Yamamoto, RT, Mr. Masato Ikedo, Meng, and Mr. Masao Yui, MS, are employees of Canon Medical Systems Corporation, who had no control over any data or information submitted for publication nor any control over any parts of data or information included in this study.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"No complex statistical methods were necessary for this paper.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Statistics and biometry"}},{"value":"This retrospective study was approved by the Institutional Review Board of Fujita Health University Hospital and is compliant with the Health Insurance Portability and Accountability Act. Written informed consent was waived.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}},{"value":"This retrospective study was approved by the Institutional Review Board of Fujita Health University Hospital and is compliant with the Health Insurance Portability and Accountability Act. Written informed consent was waived.","order":6,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"This study was not overlapped with any study cohort.","order":7,"name":"Ethics","group":{"name":"EthicsHeading","label":"Study subjects or cohorts overlap"}},{"order":8,"name":"Ethics","group":{"name":"EthicsHeading","label":"Methodology"}}]}}