Received: 29 June 2018
Accepted: 9 November 2018
First Online: 4 January 2019
Ethics approval and consent to participate
: Study was approved by the Ethics Committee of the Policlinico Universitario A. Gemelli-Università Cattolica del S. Cuore, Rome.
: Written informed consent was obtained from the parents of the patients for publication of this cases report and any accompanying images. A copy of the written consent is available for review by the Editor of this journal.
: The authors declare that they have no competing interests.
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