1. Melanoma and Skin Cancer Unit, Facultad de Medicina Pontificia Universidad Católica de Chile Santiago Chile
2. Department of Dermatology, Facultad de Medicina Pontificia Universidad Católica de Chile Santiago Chile
3. Dermatology Service, Department of Medicine, Memorial Sloan Kettering Cancer CenterNew York NY USA
4. Department of Dermatology, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine Tel Aviv University Tel Aviv Israel
5. Department of Dermatology, Facultad de Medicina Universidad de Chile Santiago Chile
6. Department of Dermatology University of São Paulo Medical School Sao Paulo Brazil
7. Clinica Sanatorio Alemán Concepción Chile
8. Department of Pathology, Facultad de Medicina Pontificia Universidad Católica de Chile Santiago Chile