| Affiliation: | 1. Department of Pediatrics, Aarhus University Hospital, Aarhus, Denmark;2. Danish Cancer Society Research Center, Copenhagen, Denmark;3. Children's Hospital Iceland, Landspitali University Hospital, Reykjavik, Iceland;4. Department of Clinical Sciences, Lund, Cancer Epidemiology, Lund University, Sweden;5. Finnish Cancer Registry, Helsinki, Finland;6. Department of Pediatrics, Jorvi Central Hospital, Espoo, Finland;7. Faculty of Medicine, University of Iceland, Reykjavik, Iceland;8. Icelandic Cancer Registry, Reykjavik, Iceland;9. Norwegian Cancer Registry, Oslo, Norway;10. Department of Clinical Sciences, Pediatric Oncology and Hematology, Sk?ne University Hospital, Lund University, Lund, Sweden |
