1. Associate Professor at Dermatology and Venereology Department, Faculty of Medicine, Al-Azhar University Hospital, Cairo, Egypt
2. Professor of Dermatology and Venereology, National Institute of Laser Enhanced Sciences, Cairo University, Egypt
3. MSc of Dermatology, Helwan University, Cairo, Egypt
4. Assistant Professor of Dermatology and Venereology, National Institute of Laser Enhanced Sciences, Cairo University, Cairo, Egypt