1. Al-Ahrar Teaching Hospital, General Organization For Teaching Hospitals and Institutes (GOTHI), Ministry of Health, Zagazig, Egypt
2. Community, Environmental and Occupational Medicine Department, College of Medicine, Zagazig University, Zagazig, Egypt
3. Foundation for Advancement of International Medical Education and Research (FAIMER), Diagnostic Radiology Registrar, Ministry of Health, Zagazig, Egypt
4. Diagnostic Radiology Specialist, Sharkia Governorate, Ministry of Health, Zagazig, Egypt
5. Medical Microbiology and Immunology Department, College of Medicine, Zagazig University, Zagazig, Egypt