1. Department of Dermatology and Allergy University Hospital LMU Munich Germany
2. PhD School in Clinical and Experimental Medicine University of Modena and Reggio Emilia Modena Italy
3. Department of Dermatology and Allergy University Hospital Augsburg Germany
4. Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery Miller School of Medicine University of Miami Coral Gables FL USA