Article History
First Online: 29 August 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The study was conducted according to roles of the internal review board of Tanta Faculty of Medicine. Participation was voluntarily and no pressures exerted to share in data collection. Data collection was anonymous to protect participants’ rights to give correct information. The information was used only for research purpose and was not shared with any other authority.