David A. Walker is Professor Paediatric Oncology, School of Medicine, University of Nottingham, Nottingham, UK Giorgio Perilongo is Director, Department of Woman’s and Child’s Health, Division of Pediatrics, University of Padua, Padua, Italy Roger E. Taylor is Professor of Clinical Oncology, College of Medicine, Swansea University; Honorary Consultant Clinical Oncologist, South West Wales Cancer Centre, Singleton Hospital, Swansea, UK Ian F. Pollack is Chief, Pediatric Neurosurgery, Children's Hospital of Pittsburgh, Leland Albright Distinguished Professor of Neurological Surgery, Vice Chairman for Academic Affairs, Department of Neurological Surgery, Co-Director, UPCI Brain Tumor Program, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
