Institution: | 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 |