Targeted therapy for Ewing's sarcoma: significance of heterogeneity.
Van De Luijtgaarden
A C M
AC
Department of Medical Oncology, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB Nijmegen, the Netherlands.
Van Der Graaf
W T A
WT
Otte-Höller
I
I
Schreuder
H W B
HW
Versleijen-Jonkers
Y M H
YM
Slootweg
P J
PJ