Received: 16 August 2018
Accepted: 1 October 2018
First Online: 11 October 2018
Ethics approval and consent to participate
: This report was approved by the ethics committee at Okayama University. The case patient’s legal guardian gave written, informed consent prior to undergoing surgery and for inclusion in this case study.
: The case patient’s legal guardian gave written, informed consent for publication of this report.
: The authors declare that they have no competing interests.
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