1. Department of Dermatology; University of L'Aquila; L'Aquila Italy
2. Department of Dermatology; Hôpital Erasme; Université Libre de Bruxelles; Brussels Belgium
3. Division of Dermatology; Complesso Integrato Columbus; Rome Italy
4. Dermatology Research Centre; The University of Queensland; School of Medicine; Translational Research Institute; Brisbane QLD Australia
5. Department of Dermatology; University of Rome Tor Vergata; Rome Italy
6. Department of Dermatology; Catholic University of the Sacred Heart; Rome Italy