[1] Ctr Hosp Univ Montreal CRCHUM, 900 St Denis,Room 11-442, Montreal, PQ H2X 0A9, Canada
[2] Univ Toronto, TECHNA Inst, 124-100 Coll St, Toronto, ON M5G 1L5, Canada
[3] Med Coll Wisconsin, Radiat Oncol, 9200 Wisconsin Ave, Milwaukee, WI 53226 USA
[4] Med Coll Wisconsin, Radiol, 9200 Wisconsin Ave, Milwaukee, WI 53226 USA
[5] Med Coll Wisconsin, Biophys, 9200 Wisconsin Ave, Milwaukee, WI 53226 USA
[6] Umea Univ, Dept Radiat Sci, SE-90187 Umea, Sweden
[7] Univ Michigan, Dept Radiat Oncol, 1500 East Med Ctr Dr, Ann Arbor, MI 48109 USA
[8] Ingham Inst Appl Med Res, Med Phys, 1 Campbell St, Liverpool, NSW 2170, Australia
[9] Liverpool Canc Therapy Ctr, 1 Campbell St, Liverpool, NSW 2170, Australia
[10] Iridium Canc Network, Dept Radiat Oncol, Oosterveldlaan 24, B-2610 Antwerp, Belgium
[11] Univ Antwerp, Dept Mol Imaging Pathol Radiotherapy & Oncol MIPR, Prinsstr 13, B-2000 Antwerp, Belgium
[12] Netherlands Canc Inst, Dept Radiat Oncol, Plesmanlaan 121, NL-1066 CX Amsterdam, Netherlands