Algorithms|Carcinoma, Neuroendocrine|Child|Computing Methodologies|Databases, Genetic|Gene Expression Profiling|Gene Expression Regulation, Neoplastic|Genetic Testing|Humans|Leukemia, Myeloid|Neoplasms|Oligonucleotide Array Sequence Analysis|Precursor Cell Lymphoblastic Leukemia-Lymphoma|Reproducibility of Results|Sensitivity and Specificity