1. Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Assiut University, Assiut, Egypt
2. Department of Tropical Medicine & Gastroenterology, Assiut University, Assiut, Egypt
3. Department of Clinical Pathology, South Egypt Cancer Institute, Assiut University, Assiut, Egypt
4. Department of Medical Physiology, Faculty of Medicine, Assiut University, Assiut, Egypt
5. Department of Tropical Medicine and Gastroenterology, Faculty of Medicine, Al-Azhar University, Assiut, Egypt
6. Department of Clinical Pathology, Faculty of Medicine, Assiut University, Assiut, Egypt
7. Department of Andrology and Sexology, Cairo University, Cairo, Egypt
8. Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
9. Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA