1. 1Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
2. 2Weill Cornell Medical College, New York, New York.
3. 3Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York.
4. 4Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York.
5. 5Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York.
6. 6Anti-tumor Core Facility, Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, New York.
7. 7Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York.
8. 8Merus N.V., Utrecht, the Netherlands.