M.M. Kotb, U.F. Omar and A.A. Khalifa declare that they have no competing interests.

This article does not contain any experimental studies with human participants or animals performed by any of the authors, and the ethics committee of our institution waived the approval as it was considered part of the usual patient care: Faculty of Medicine, Assiut University, Egypt (Telephone, Fax: +20882332278, ethics-committee12@yahoo.com, IRB-Asyut@aun.Edu.eg, http://afm.edu.eg). Informed consent was obtained from the patient’s parents. The patient’s parents signed informed consent regarding publishing her data and photographs anonymously.