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Article History

Received: 22 September 2017

Accepted: 12 November 2018

First Online: 16 November 2018

Ethics approval and consent to participate

: The study was approved by the institutional review boards of Seoul National University Bundang Hospital (B-1709/421–701). We confirm that we have read the Journal’s editorial policies involved in ethical publication and affirm that this report is consistent with those guidelines.

: Informed written consent to publish data and images was obtained from the mother of the patient.

: The authors declare that they have no competing interests.

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