Received: 19 May 2020
Accepted: 4 August 2020
First Online: 17 August 2020
Ethics approval and consent to participate
: This treatment has undergone ethical review at Chiba University Hospital. The treatment was explained to the patient and written consent was obtained.
: Written consent to publish was obtained for the publication of all clinical details and images, and the consent form is available for review by the editor of the journal.
: We have no competing interests.