Detection of chimeric BCR-ABL genes in acute lymphoblastic leukemia by the polymerase chain reaction - Maurer, J; Janssen, JWG; Thiel, E; van Denderen, J; Ludwig, WD; Aydemir, Ü; Heinze, B; Fonatsch, C; Harbott, J; Reiter, A; Riehm, H; Hoelzer, D; Bartram, CR (Lancet, 1991)