1 Department of Radiation Oncology, John Theurer Cancer Center, a HMH-MSKCC partnership, Hackensack, New Jersey.
2 Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Waltham, Massachusetts.
3 Department of Radiation Oncology, Center for Bioethics and Social Sciences in Medicine, University of Michigan, Ann Arbor, Michigan. Electronic address: rjagsi@med.umich.edu.