1. Clinical Pathology Department. Faculty of Human Medicine, Zagazig University, Zagazig, Egypt
2. Hematology Unit of Internal Medicine Department. Faculty of Human Medicine, Zagazig University, Zagazig, Egypt
3. Pediatric Department. Faculty of Human Medicine, Zagazig University, Zagazig, Egypt
4. General Surgery Department. Faculty of Human Medicine, Zagazig University, Zagazig, Egypt