[1] Dana Farber Canc Inst, Harvard Radiat Oncol Program, Boston, MA 02115 USA
[2] Brigham & Womens Hosp, 75 Francis St, Boston, MA 02115 USA
[3] Dana Farber Canc Inst, Boston, MA 02115 USA
[4] Harvard Med Sch, Boston, MA 02115 USA
[5] Harvard Med Sch, Brigham & Womens Hosp, Dana Farber Canc Inst, Boston, MA 02115 USA
[6] Dana Farber Canc Inst, Dept Cardiovasc Med, Boston, MA 02115 USA
[7] Massachusetts Gen Hosp, Dept Radiol, Boston, MA USA
[8] Brigham & Womens Hosp, Dana Farber Canc Inst, Dept Radiat Oncol, 75 Francis St, Boston, MA 02115 USA