Abdelraouf, Ehab Ragaa
Kilany, Ayman
Hashish, Adel F.
Gebril, Ola Hosny
Helal, Suzette Ibrahim
Hasan, Haytham Mohamad
Nashaat, Neveen Hassan http://orcid.org/0000-0003-1553-9327
Article History
Received: 5 March 2018
Accepted: 4 October 2018
First Online: 27 November 2018
Authors’ information
: They were described on the website of the journal.
: Written informed consents were obtained from parents of all participants. The study was approved by the medical research ethics committee of the National Research Centre, Cairo, Egypt. The number of the ethics committee approval is (16/298) in 2016.
: No personal data were used for publication.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.