The data used in this work was originally published in the following paper.
Yeoh EJ, Ross ME, Shurtleff SA, Williams WK, Patel D, Mahfouz R, Behm FG, Raimondi SC, Relling MV, Patel A, et al: Classification, subtype discovery, and prediction of outcome in pediatric acute lymphoblastic leukemia by gene expression profiling. Cancer Cell 2002, 1:133-143.
This data is available as a MAS5 exprSet object in an R data package yeoh5Eset_1.0.zip.