1. 1Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York.
2. 2Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York.
3. 3Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York.
4. 4Anti-tumor Assessment Core Facility, Department of Pharmacology, Memorial Sloan Kettering Cancer Center, New York, New York.