1. Department of Dermatology, STDs and Andrology, Faculty of Medicine, Minia University, El-Minia, Egypt;
2. Department of Dermatology, STDs and Andrology, Faculty of Medicine, Fayoum University, Fayoum, Egypt;
3. Department of Dermatology, Cairo University, Cairo, Egypt;
4. Department of Histology, Faculty of Medicine, Cairo University, Cairo, Egypt;
5. Department of Dermatology, STDs and Andrology, Helwan University, Cairo Egypt