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Outside this study, Naoko Tachibana received a research grant from Novartis Pharma K.K.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflicts of interest"}},{"value":"This study was approved by the institutional review board of Kansai Electric Power Hospital and conducted according to the ethical standards issued by the Declaration of Helsinki.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval"}},{"value":"The details of this study was posted up in our hospital with our contact information. All patients were exempt by the institutional review board of Kansai Electric Power Hospital from providing written informed consent due to the retrospective design of this study; however, all patients had the chance to request the detailed explanation from us and opt out at any time.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate and consent for publication"}},{"value":"Not applicable.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Code availability"}}]}}