Impact of surgery, chemotherapy and irradiation on long term outcome of intracranial malignant non-germinomatous germ cell tumors: results of the German Cooperative Trial MAKEI 89. - Calaminus,G.; Bamberg,M.; Jürgens,H.; Kortmann,R.D.; Sörensen,N.; Wiestler,O.D. (Klin Pädiatr, 2004)