TY - RPRT TI - Case control study on childhood leukemia in Lower Saxony, Germany. Basic considerations, methodology, and summary of results. AU - P Kaatsch AU - U Kaletsch AU - F Krummenauer AU - R Meinert AU - A Miesner AU - G Haaf AU - J Michaelis DO - 10.1055/s-2008-1046470 UR - https://pubmed.ncbi.nlm.nih.gov/8776704/ ID - 8776704 ER -