1. Human Oncology and Pathogenesis Program (HOPP), Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.
2. Developmental Biology Program, Sloan Kettering Institute, New York, NY 10065, USA.
3. Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
4. Genomics Core Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
5. Department of Pathology, Hospital de la Santa Creu i Sant Pau, 167 Sant Antoni M. Claret, Barcelona 08025, Spain.
6. Department of Dermatology, Hospital de la Santa Creu i Sant Pau, Barcelona 08025, Spain.
7. Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.