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Umetsu et al. Hepatoma Res 2020;6:1 I http://dx.doi.org/10.20517/2394-5079.2019.030 Page 9 of 10

Ethical approval and consent to participate
The institutional review board of Saiseikai Yokohama-shi Tobu Hospital approved, and informed consent
was obtained from parent.

Consent to participate
Written informed consent was obtained from the guardian of the patients for publication of this Case
report and any accompanying images. A copy of the written consent is available for review by the Editor of
this journal.

Copyright
© The Author(s) 2020.

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