1. Departments of Radiology and Dermatology; IDIEP, Institute for Diagnostic Imaging and Research of the Skin and Soft Tissues; Clinica Servet; Faculty of Medicine; University of Chile; Santiago Chile
2. Department of Dermatology; Hospital Clinico U. Chile; Faculty of Medicine; University of Chile; Santiago Chile
3. Office for Clinical Research Support; Hospital Clinico U. Chile; Faculty of Medicine; University of Chile; Santiago Chile
4. Department of Dermatology; Clinica Davila and Hospital Clinico U. Chile; Faculty of Medicine; University of Chile; Santiago Chile
5. Department of Dermatology; Hospital Barros Luco Trudeau; Faculty of Medicine; University of Chile; Santiago Chile
6. Department of Pathology, Dermopathology Section; Histodiagnostico Malaga; Faculty of Medicine; University of Chile Santiago Chile
7. Department of Medicine; Southern Illinois University School of Medicine; Springfield Illinois USA