1. Division of Genetics and Epidemiology, Institute of Cancer Research, Sutton, Surrey, United Kingdom;
2. Division of Molecular Genetic Epidemiology, German Cancer Research Centre, Heidelberg, Germany;
3. Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany;
4. Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom;
5. Epidemiology and Cancer Statistics Group, Department of Health Sciences, University of York, York, United Kingdom;
6. Department of Paediatric and Adolescent Haematology and Oncology, Leeds General Infirmary, Leeds, United Kingdom;
7. Leeds Institute of Molecular Medicine, University of Leeds, Leeds, United Kingdom;
8. Cancer Immunogenetics Group, School of Cancer Sciences, University of Manchester, St. Mary's Hospital, Manchester, United Kingdom;
9. Institute of Human Genetics, University of Bonn, Bonn, Germany;
10. German Center for Neurodegenerative Diseases, Bonn, Germany;
11. Institute for Medical Informatics, Biometry and Epidemiology, University Hospital Essen, University of Duisburg–Essen, Essen, Germany;
12. Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany;
13. General Pediatrics, University Hospital Schleswig-Holstein, Kiel, Germany;
14. Haemato-Oncology Research Unit, Division of Molecular Pathology, Institute of Cancer Research, Sutton, Surrey, United Kingdom; and
15. Center for Primary Health Care Research, Lund University, Malmö, Sweden