Wuchter C, Leonid K, Ruppert V, Schrappe M, Buchner T, Schoch C, Haferlach T, Harbott J, Ratei R, Dorken B, Ludwig W. Clinical significance of P-glycoprotein expression and function for response to induction chemotherapy, relapse rate and overall survival in acute leukemia. Haematologica 2000; 85(7):711-721.