1. Department of Dermatology and Andrology; Faculty of Medicine; AL-Minya University; AL-Minya Egypt
2. Department of Dermatology; Faculty of Medicine; Cairo University; Cairo Egypt
3. Department of Cutaneous Physiopathology; San Gallicano Dermatologic Institute; Rome Italy
4. Department of Dermatology and Pediatric Dermatology; National Reference Centre for Rare Skin Disorders; CHU de Bordeaux; Bordeaux France
5. INSERM U1035; University of Bordeaux; Bordeaux France