1. Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
2. Medical Genetics Unit, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
3. Department of Surgery, School of Medicine, Tulane University, New Orleans, LA, USA
4. Department of Dermatology, Ministry of Health and Population, Al Qantara East Central Hospital, Ismailia, Egypt