1. Department of Dermatology Mansoura Dermatology, Venerology and Leprology Hospital Mansoura Egypt
2. Unit of Plastic and Reconstructive Surgery, Department of Emergency and Organ Transplantation University of Bari Bari Italy
3. Department of Dermatology Brigham and Women's Hospital, Harvard Medical School Boston Massachusetts USA
4. Department of Dermatology University of Rome G. Marconi Rome Italy
5. Department of Dermatology University Medical Center Mainz Mainz Germany
6. Department of Dermatology University Hospital Basel Basel Switzerland