1. Interventional Radiology Service, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065.
2. Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY.
3. Center for Health Policy and Outcomes, Memorial Sloan Kettering, New York, NY.
4. Department of Radiology, NYU Langone Medical Center, New York, NY.
5. School of Management, Yale University, New Haven, CT.
6. Yale School of Medicine, New Haven, CT.
7. Department of Radiology, Massachusetts General Hospital, Boston, MA.
8. Harvard Medical School, Boston, MA.