[1] Univ Amsterdam, Amsterdam UMC, Dept Radiotherapy, Meibergdreef 9, NL-1105 AZ Amsterdam, Netherlands
[2] Leiden Univ, Med Ctr, Dept Orthoped, POB 9600, NL-2300 RC Leiden, Netherlands
[3] Radboud Univ Nijmegen, Med Ctr, Dept Neurosurg, POB 9101, NL-6500 HB Nijmegen, Netherlands
[4] Univ Med Ctr Utrecht, Dept Med Oncol, POB 85500, NL-3508 GA Utrecht, Netherlands
[5] Radiotherapy Inst Friesland, Borniastr 36, NL-8934 AD Leeuwarden, Netherlands
[6] Natl Federat Canc Patient Org, POB 8152, NL-3503 RD Utrecht, Netherlands
[7] Alkmaar Med Ctr, Dept Radiol, POB 501, NL-1800 AM Alkmaar, Netherlands
[8] Univ Med Ctr Groningen, Dept Neurosurg, POB 30001, NL-9700 RB Groningen, Netherlands
[9] UMC Utrecht Canc Ctr, Dept Hematol, POB 85500, NL-3508 GA Utrecht, Netherlands
[10] Vrije Univ Amsterdam Med Ctr, Dept Neurol, POB 7057, NL-1007 MB Amsterdam, Netherlands
[11] Community Hlth Ctr Hardijzer & Rolf, Jel Rinckesstrjitte 2, NL-8851 ED Tzummarum, Netherlands
[12] Rijndam Rehabil Ctr, SCI Unit, Westersingel 300, NL-3015 LJ Rotterdam, Netherlands
[13] Rijnstate, Dept Anesthesiol Pain Med & Palliatieve Care, POB 9555, NL-6800 TA Arnhem, Netherlands
[14] Netherlands Comprehens Canc Org IKNL, Vasteland 78, NL-3011 BN Rotterdam, Netherlands
[15] Leiden Univ, Med Ctr, Dept Radiotherapy, Ctr Expertise Palliat Care, POB 9600, NL-2300 RC Leiden, Netherlands
[16] Erasmus MC Canc Inst, Dept Neurooncol Neurol, Dr Molewaterpl 40, NL-3015 GD Rotterdam, Netherlands