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Yuko Hamasaki received payment\/honoraria for lectures and educational events from Pfizer Inc., Chugai Pharma Co, Astellas Pharma Inc. Novartis Pharma AG & Torii Pharma Co. and holds director and councilor of the society with The Japanese Society for Pediatric Kidney Failure & Japanese Society of Pediatric Urology. Ken Sakai received grants from JMS Co., Ltd. payment\/honoraria for lectures and educational events from Kissei Pharmaceutical Co., Ltd., Novartis Pharma K.K., & Kyowa Kirin Co., Ltd. and holds director and councilor of the society with The Japanese Society for Dialysis Therapy, Japanese Society of Transplantation & Japanese Society for Clinical Renal Transplantation. The rest of the authors declare that they have no competing interests.","order":1,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Written informed consent was obtained from the patient and his parents for publication of this case report. 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