Arafa, Ahmed Emad El-Din
Ewis, Ashraf Abd Elazim
Mahran, Waleed Mohamed
Mohamed, Amel Abd Elazim
El-Shabrawy, Ekram Mohamed
Article History
Received: 16 March 2018
Accepted: 17 May 2018
First Online: 26 May 2018
Compliance with ethical standards
: The study was conducted in full accordance with the guidelines for Good Clinical Practice and the Declaration of Helsinki. The protocol was approved by the Research Ethics Committee at the Faculty of Medicine, Beni-Suef University. The heads of the selected schools were briefed on the purpose of the study and signed an informed consent form on behalf of the school children. Verbal assent of the students was sought before they were examined.
: The authors declare no conflict of interests.