1. Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
2. Department of Medicine, Weill Cornell Medical College, New York, New York.
3. Analytical Pharmacology Core, Memorial Sloan Kettering Cancer Center, New York, New York.
4. Department of Medicine, Columbia University Irving Medical Center, New York, New York.
5. Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York.
6. Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York.
7. Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York.
8. Cancer Therapy Evaluation Program, National Cancer Institute, Rockville, Maryland.
9. Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York.