1. Anatomic Pathology Unit; Gaetano Rummo General Hospital; Benevento Italy
2. Dermatopathology Unit; Istituto Dermopatico dell'Immacolata; Rome Italy
3. Department of Dermatology; University of Washington, Seattle; Seattle WA USA
4. Department of Dermatology; Second University of Naples; Naples Italy
5. Department of Dermatology; Inselspital - Bern University Hospital; Bern Switzerland
6. Department of Dermatology; University of London; London UK
7. Research Unit Dermatopathology, Department of Dermatology; Medical University of Graz; Graz Austria
8. Dermatopathology Unit; San Galligano Dermatological Institute; Rome Italy
9. Department of Dermatology; Ospedale Santa Maria della Misericordia; Perugia Italy
10. Department of Dermatopathology; St John's Institute of Dermatology, St Thomas' Hospital; London UK
11. Department of Dermatology; Medical University of Graz; Graz Austria
12. Department of Dermatology, Division of General Dermatology; Medical University of Vienna; Vienna Austria
13. Dermatology Research Centre; The University of Queensland, School of Medicine, Translational Research Institute; Brisbane Australia