Received: 8 April 2019
Accepted: 3 September 2019
First Online: 10 October 2019
Ethics approval and consent to participate
: Ethical approval to publish these case reports was obtained from the Faculty of Health Sciences Research Ethical Committee of the University of Pretoria (Ethics Reference No.: 756/2018).
: Written informed consents were obtained from the patients and parents/caretakers of the children for the publication of these cases and the accompanying images. Copies of written consent forms are available for review by the Editor-in-Chief of this journal.
: The authors declare that they have no competing interests.