Received: 12 August 2020
Accepted: 22 December 2020
First Online: 11 January 2021
Change Date: 22 January 2021
Change Type: Correction
Change Details: An amendment to this paper has been published and can be accessed via the original article.
Ethics approval and consent to participate
: Not applicable.
: Written informed consent was obtained from the parents for publication of the medical data and accompanying images.
: The authors declare that they have no competing interests.