1. Dermatology Department, Faculty of Medicine Cairo University, Cairo, Egypt
2. Dermatology Department, Kasr Al-Ainy Psoriasis Unit, Faculty of Medicine Cairo University, Cairo, Egypt
3. Department of Internal Medicine, Kasr Al-Ainy Vascular Lab, Faculty of Medicine Cairo University, Cairo, Egypt
4. Clinical and Chemical Pathology Department, Faculty of Medicine Cairo University, Cairo, Egypt