1. Department of Internal Medicine, Faculty of Medicine, Assiut University Hospital, Assiut, Egypt
2. Department of Internal medicine and critical care unit, Faculty of Medicine, Assiut University Hospital, Assiut, Egypt
3. Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Assiut University, Assiut, Egypt
4. Department of Basic Medical Science, Badre University, Badr City, Egypt
5. Faculty of Public Health and Tropical Medicine, Jazan University, Jizan, Saudi Arabia