Algorithms|Computer Simulation|Gene Expression Profiling|Gene Expression Regulation, Neoplastic|Genetic Variation|Humans|Leukemia, Myeloid|Models, Genetic|Models, Statistical|Oligonucleotide Array Sequence Analysis|Precursor Cell Lymphoblastic Leukemia-Lymphoma|Quality Control|Reproducibility of Results|Sensitivity and Specificity|Sequence Alignment|Sequence Analysis, DNA|Sequence Homology, Nucleic Acid