1. Orthopedic and Traumatology Unit Sant'Anna University Hospital Ferrara Italy
2. Dermatology Clinic, Hospital Maggiore of Trieste University of Trieste Italy
3. Plastic Surgery Unit, Section of Dermatology Campus Biomedico University Rome Italy
4. College of Medicine Central Michigan University Saginaw Michigan USA
5. Dermatology, University of Rome Guglielmo Marconi Rome Italy
6. Department of Clinical and Experimental Medicine, Dermatology University of Messina Messina Italy