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Authors
Nagao, Hiroyuki https://orcid.org/0000-0002-7681-0064
Tanaka, Toshikatsu
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Article History
Received: 12 July 2020
Accepted: 5 December 2020
First Online: 4 January 2021
Compliance with Ethical Standards
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: The authors have no conflicts of interest directly relevant to the content of this article.
: Hyogo prefectural Kobe children’s hospital institutional Review Board approved this retrospective study (Protocol no. 2-29), and individual written informed consent was waived.
