1. Department of Dermatology, Venereology and Andrology, Faculty of Medicine Assuit University Assuit Egypt
2. Department of Tropical medicine and Gastroenterology, Faculty of Medicine Assuit University Assuit Egypt
3. Department of Public Health and Community Medicine Assiut University Assuit Egypt
4. Department of Clinical pathology, Quena faculty of Medicine South Valley University South Valley University Qena Egypt