1. Department of Dermatology; Zhujiang Hospital; Southern Medical University; Guangzhou China
2. Section of Dermatology; Department of Medical, Surgical and Neurosciences; University of Siena; Siena Italy
3. Department of Medical Biotechnologies; University of Siena; Siena Italy
4. Section of Plastic Surgery Dermatology; Department of Medical, Surgical and Neurosciences; University of Siena; Siena Italy