1. Section of Dermatology, Department of Medicine and Surgery University of Parma Parma Italy
2. University of Rome G. Marconi Rome Italy
3. Department of Dermatology and Communicable Diseases, Ministry of Health First Medical Moscow State University, Higher Education Institution I. M. Sechenov Moscow Russia
4. Department of Medicine and Surgery Unit of Neuroscience and Interdepartmental Center of Robust Statistics (Ro.S.A.) University of Parma Parma Italy
5. Medica Plus, Outpatient Dermatology Service Modena Italy
6. Medical Department Cantabria Labs Difa Cooper Caronno Pertusella Italy
7. Dermatologic Unit University Hospital of Parma Parma Italy