Received: 1 April 2019
Accepted: 28 May 2019
First Online: 7 June 2019
Ethics approval and consent to participate
: This clinical research was approved by the Research Ethics Board of the Osaka University Research Committee and conducted according to Institutional Review Board guidelines. Written informed consent was obtained from the patient prior to the publication of the present case report.
: Written informed consent was obtained from the patient involved in this publication and accompanying images. A copy of this written consent is available for review by the Editor-in-Chief of this journal.
: The authors declare that they have no competing interests.