[1] Dana Farber Brigham & Womens Canc Ctr, Dept Radiat Oncol, Boston, MA 02215 USA
[2] MD Anderson Canc Ctr, Dept Radiat Oncol, Houston, TX USA
[3] NCI, RADIAT ONCOL BRANCH, BETHESDA, MD USA
[4] ENVIRONM CANADA, DOWNSVIEW, ON, Canada
[5] Stanford Univ, Sch Med, Dept Radiat Oncol, Stanford, CA USA
[6] Stanford Univ, Sch Med, Stanford Canc Inst, Stanford, CA USA
[7] Royal Marsden Hosp, Dept Radiat Oncol, London, England
[8] Med Coll Wisconsin, Dept Radiat Oncol, Milwaukee, WI USA
[9] Univ Calif Irvine, Dept Radiat Oncol, Irvine, CA USA
[10] Mayo Clin, Dept Radiat Oncol, Rochester, MN USA
[11] HSE, Dublin, Ireland
[12] Netherlands Canc Inst, Amsterdam, Netherlands
[13] Mem Sloan Kettering Canc Ctr, Dept Radiat Oncol, New York, NY USA
[14] Netherlands Canc Inst, Amsterdam, Netherlands