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Article History

Received: 2 March 2018

Accepted: 19 June 2018

First Online: 9 July 2018

Ethics approval and consent to participate

: The ethical board of Sapporo Medical University and Hospital waved the need for committee approval of studies concerning publication of a case report.

: The patient provided her informed consent for publication of this report and any accompanying images.

: The authors declare that they have no competing interests.

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