1Department of Oncology and Human Genetics, Program in Cancer Genetics, McGill University, Montreal, Quebec, Canada
2Department of Human Genetics, Lady Davis Institute and Segal Cancer Centre, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
3Department of Human Genetics, McGill University, Montreal, Quebec, Canada
4Department of Paediatric Haematology and Oncology, University of Bonn, University Children's Hospital, Bonn, Germany
5Department of Paediatric Oncology and Haematology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
6Department of Pathology, University of Cambridge, Cambridge, UK
7School of Paediatrics and Child Health, University of Western Australia, Crawley, Western Australia, Australia
8Department of Paediatric Endocrinology and Diabetes, Princess Margaret Hospital for Children, Child and Adolescent Health Service, Subiaco, Western Australia, Australia
9Centre for Translational and Applied Genomics, The British Columbia Cancer Agency and the Genetic Pathology Evaluation Centre of the Departments of Pathology of the Vancouver General Hospital, British Columbia, Canada
10Department of Pathology, Memorial Sloan-Kettering Cancer Centre, New York, NY, USA
11Department of Pathology, Royal Group of Hospitals Trust, Belfast, Northern Ireland, UK
12Department of Paediatric Haematology and Oncology, University of Münster, Münster, Germany
13Clinic of Paediatrics, Municipal Hospital Dortmund, Dortmund, Germany
14Department of Pathology, McGill University, Montreal, Quebec, Canada
15King Edward Memorial Hospital, Department of Histopathology, Perth, Australia
16Research Institute, McGill University Health Centre, Montreal, Quebec, Canada