TY - JOUR A1 - L.L., Hjalgrim A1 - Rostgaard, K. A1 - Hjalgrim, H. A1 - Westergaard, T. A1 - Thomassen, H. A1 - Forestier, E. T1 - Birth weight and risk for childhood leukemia in Denmark, Sweden, Norway, and Iceland Y1 - 2004 DO - 10.1093/jnci/djh287 JF - Journal of the National Cancer Institute VL - 96 IS - 20 ER -