Funding for this research was provided by:
National Natural Science Foundation of China (81300798)
Natural Science Foundation of Hunan Province (2018JJ3737)
Received: 12 August 2019
Accepted: 12 January 2021
First Online: 22 January 2021
Ethics approval and consent to participate
: Written informed consent was obtained from the parents of the patient, who was below 18 years of age, after the nature and possible consequences of the study were explained. Informed consent was obtained from the parents of the child to report the case and present the photographs.
: The parents or guardians provided consent for the participant in this study signed written consent forms for the publication of their relevant clinical data. A copy is available to the journal.
: The authors declare that there is no competing interest.