1 Cancer Research UK Clinical Trials Unit, National Institute for Health Research Birmingham Biomedical Research Centre, Institute of Cancer and Genomic Sciences, University of Birmingham, B15 2TT Birmingham, UK. Electronic address: p.r.kearns@bham.ac.uk.
2 Department of Clinical Research, Gustave Roussy, Villejuif, France; Paris-Sud University, Orsay, France.
3 Department of Pediatrics, St Anna Children's Hospital, Medical University, Vienna, Austria; Studies and Statistics of Integrated Research and Projects, Children's Cancer Research Institute, Vienna, Austria.
4 Department of Pediatrics and Adolescent Medicine I, Christian-Albrechts-University and University Medical Center Schleswig-Holstein, Campus, Kiel, Germany.
5 Department of Pediatrics, University of Milano-Bicocca, Fondazione MBBM/Ospedale San Gerardo, Monza, Italy.
6 Management Department, Unite2Cure, Europe; Imagine for Margo, Fourqueux, France.
7 Department of Paediatrics, Department of Oncology and Hematology, Charité University Hospital of Berlin, Berlin, Germany.
9 Policy Department, European Society for Paediatric Oncology - SIOP Europe, Brussels, Belgium.
10 Medical Department, Princess Máxima Center for Pediatric Oncology, Utrecht, Netherlands.
11 Department of Pediatrics and Adolescent Medicine, Rigshospitalet University Hospital, and Institute of Clinical Medicine, Faculty of Medicine, University of Copenhagen, Copenhagen, Denmark.