[1] Tech Univ Dresden, Dept Radiat Oncol, Dresden, Germany
[2] Tech Univ Dresden, OncoRay Natl Ctr Radiat Res Oncol, Fac Med, Dresden, Germany
[3] Tech Univ Dresden, Univ Hosp Carl Gustav Carus, Dresden, Germany
[4] Cantonal Hosp Aarau, Inst Radiooncol, Aarau, Switzerland
[5] Univ Med Ctr Hamburg Eppendorf, Lab Radiobiol & Expt Radiooncol, Hamburg, Germany
[6] Radboud Univ Nijmegen, Med Ctr, Dept Radiat Oncol, NL-6525 ED Nijmegen, Netherlands
[7] Aarhus Univ Hosp, Dept Expt Clin Oncol, DK-8000 Aarhus, Denmark
[8] Univ Tubingen, Dept Radiat Oncol, Div Radiobiol & Mol Environm Res, Tubingen, Germany
[9] Univ Hlth Network, Princess Margaret Canc Ctr, Ontario Canc Inst, Toronto, ON, Canada
[10] Univ Hlth Network, Princess Margaret Canc Ctr, Campbell Family Inst Canc Res, Toronto, ON, Canada