1. Department of Dermatology, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
2. Dermatology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
3. Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
4. Sarcoma Oncology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, Weill Cornell Medical College, New York, New York