1. Department of Dermatology, Venereology and Andrology; Qena Faculty of Medicine; South Valley University; Qena Egypt
2. Department of Dermatology, Venereology and Andrology; Faculty of Medicine; Aswan University; Aswan Egypt
3. Department of Dermatology; Qena General Hospital; South Valley University; Qena Egypt
4. Department of Clinical Pathology; Faculty of Medicine; South Valley University; Qena Egypt