1. Medical Biochemistry Department, Faculty of Medicine Zagazig University Zagazig Egypt
2. Internal Medicine Department, Faculty of Medicine Zagazig University Zagazig Egypt
3. Pathology Department, Faculty of Medicine Zagazig University Zagazig Egypt
4. General Surgery Department, Faculty of Medicine Zagazig University Zagazig Egypt
5. Chest department, Faculty of Medicine Zagazig University Zagazig Egypt