Received: 11 October 2019
Accepted: 26 February 2020
First Online: 2 March 2020
Ethics approval and consent to participate
: Not applicable.
: Written informed consent for publication of the clinical details and clinical images was obtained from the patient as he was already of age by the time the manuscript was elaborated. Verbal consent was obtained from the parents. A copy of the consent form is available for review by the Editor of this journal.
: The authors declare that they have no competing interests.