1. Vagelos College of Physicians and Surgeons, Columbia University, New York, New York
2. Harvard Radiation Oncology Program, Boston, Massachusetts
3. College of Medicine, University of Illinois at Chicago, Chicago
4. Department of Radiation Oncology and Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center and New York-Presbyterian Hospital, New York, New York
5. Department of Radiation and Cellular Oncology, University of Chicago, Chicago, Illinois
6. Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center and New York-Presbyterian Hospital, New York, New York
7. Department of Radiology and Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center and New York-Presbyterian Hospital, New York, New York
8. Department of Radiation Oncology and Center for Bioethics and Social Sciences in Medicine, University of Michigan, Ann Arbor