Klein CE, Kastrissios H, Miller AA, Hollis D, Yu D, Rosner GL, Grinblatt DL, Larson RA, Ratain MJ. Pharmacokinetics, pharmacodynamics and adherence to oral topotecan in myelodysplastic syndromes: a Cancer and Leukemia Group B study. Cancer Chemother Pharmacol. 2006 Jan; 57(2):199-206.