[1] Netherlands Canc Inst, Dept Radiat Oncol, NL-1066 CX Amsterdam, Netherlands
[2] GROW Sch Oncol & Dev Biol, Dept Radiat Oncol MAASTRO, Maastricht, Netherlands
[3] Netherlands Canc Inst, Dept Neurol, NL-1066 CX Amsterdam, Netherlands
[4] Netherlands Canc Inst, Dept Psychol, NL-1066 CX Amsterdam, Netherlands