23.01.2000
R. Sankila, J.H. Olsen, H. Anderson, S. Garwicz, E. Glattre, H. Hertz, F. Langmark, M. Lanning, T. Moller, H. Tulinius, for the Association of the Nordic Cancer Registries and the Nordic Society of Paediatric Haematology and Oncology
The New England Journal of Medicine, 1998; 338: 1339-1344