1. Faculty of Medicine, Cairo University; Department of Dermatology; 13th Abrag Othman Kournish el Maadi Cairo Egypt 11431
2. Ain Shams University; Faculty of Medicine; Cairo Egypt
3. Cairo University; Department of Dermatology, Faculty of Medicine; Kasr El Aini Hospital Medical School 15 Nasser Street from Fatma Roshdi St.Haram, Guiza Cairo Egypt
4. Chang Gung Memorial Hospital; Department of Dermatology and Centre for Evidence-Based Medicine; 6, Sec West, Chia-Pu Road Puzih Chiayi Taiwan 61363
5. Chang Gung University; College of Medicine; Taoyuan Taiwan
6. Ain Shams University; Department of Obstetrics and Gynaecology, Faculty of Medicine; Ramsees street, Abbaseya Cairo Egypt 11566
7. Harrogate and District NHS Foundation Trust; Department of Dermatology; Harrogate UK