Received: 24 May 2019
Accepted: 2 December 2019
First Online: 17 December 2019
Ethics approval and consent to participate
: Approval for this study was obtained from institutional review board (IRB) of Faculty of Medicine Aswan University prior to study execution (No. 21, Jan. 2018). In addition, all participants’ caregivers received a written consent form. The informed consent was clear and indicated the purpose of the study, and their freedom to participate or withdraw at any time without any obligation. Furthermore, participants’ confidentiality and anonymity were assured by assigning each participant with a code number for the purpose of analysis only. The study was not based on any incentives or rewards for the participants.
: Not applicable
: All authors declare that they have no competing interests.