Calibration|Computational Biology|DNA, Complementary|Data Interpretation, Statistical|Gene Expression|Gene Expression Regulation|Gene Expression Regulation, Neoplastic|Humans|Models, Statistical|Multivariate Analysis|Normal Distribution|Nucleic Acid Hybridization|Oligonucleotide Array Sequence Analysis|Oligonucleotide Probes|Polymerase Chain Reaction|RNA|RNA, Neoplasm|Reference Standards|Reproducibility of Results|Sensitivity and Specificity