[1] Brigham & Womens Hosp, Harvard Radiat Oncol Program, Boston, MA 02115 USA
[2] Univ Connecticut, Storrs, CT USA
[3] Brigham & Womens Hosp, Boston, MA 02115 USA
[4] Dana Farber Canc Inst, Boston, MA 02115 USA
[5] Baptist Hosp Miami, Miami, FL USA
[6] Harvard Univ, Brigham & Womens Hosp, Dana Farber Canc Inst, Dept Radiat Oncol,Canc Ctr,Med Sch, Boston, MA 02115 USA