Reply to letter that comments on 'Intraventricular methotrexate as part of primary therapy for children with infant and/or metastatic medulloblastoma: Feasibility, acute toxicity and evidence for efficacy'
1 Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Germany.
2 Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Germany; Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, University Medical Center, Goettingen, Germany.
3 Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Germany. Electronic address: s.rutkowski@uke.de.