1. Department of Dermatology, Venereology and Andrology; Faculty of Medicine; Assiut University; Assuit Egypt
2. Department of Dermatology, Venereology and Andrology; Faculty of Medicine; Sohag University; Sohag Egypt
3. Department of Medical Bioscience; University of the Western Cape; Bellville South Africa
4. Department of Urology; American Center for Reproductive Medicine; Cleveland Clinic; Cleveland OH USA