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This study was approved by the Ethics Committee of the National Center for Child Health and Development (approval no. 2020\u2013328). In addition, this study was approved by the ethics committees of the study institutions other than the National Center for Child Health and Development.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval"}},{"value":"Informed consent was obtained in the form of opt-out from the patients or family members.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate"}},{"value":"Not applicable.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"Koichi Kamei received research funding from the Public Foundation of Vaccination Research Center and the Taiju Life Social Welfare Foundation; donations from Chugai Pharmaceutical, Teijin Pharma, Kyowa Kirin, Taiho Pharmaceutical, Shionogi, Daiichi Sankyo, and Mitsubishi Tanabe Pharma; and lecture fees from Terumo. Kandai Nozu is a member of the advisory groups for Kyowa Kirin Co. Ltd., Toa Eiyo LTD., Zenyaku Kogyo Co. Ltd., and Taisho Pharmaceutical Co. Ltd.; has a patent for developing exon skipping therapy for patients with Alport syndrome; received lecture fees from Ono Pharma, Astellas Pharma, Novo Nordisk Pharma, Alexion Pharma, Sumitomo Pharma, Sanofi, Otsuka Pharma, Daiichi Sankyo, and Miyarisan; and received grants from Zenyaku Kogyo and Torii Co. Ltd.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}]}}