Text and Data Mining valid from 2019-07-05
Received: 1 February 2019
Accepted: 10 June 2019
First Online: 5 July 2019
Ethics approval and consent to participate
: The study protocol has been approved by the Institutional Review Board of The First Affiliated Hospital of Sun Yat-sen University.
: Informed written consent was obtained from parents for the publication of images and other clinical information relating to this case to be reported for academic purposes.
: The authors declare that they have no competing interests.