1. Melanoma and Skin Cancer Unit; Faculty of Medicine; Pontificia Universidad Católica de Chile; Santiago Chile
2. Department of Dermatology; Faculty of Medicine; Pontificia Universidad Católica de Chile; Santiago Chile
3. Dermatology Service; Las Condes Clinic; Santiago Chile
4. Department of Medicine and Medical Divisions; University of Alcalá; Madrid Spain
5. Memorial Sloan Kettering Cancer Center; New York USA
6. Department of Pathology; Faculty of Medicine; Pontificia Universidad Católica de Chile; Santiago Chile