Sensitivity and SpecificityPolymerase Chain ReactionDiagnostic ErrorsDiagnostic Tests, RoutineDiagnostic Techniques and ProceduresDiagnostic ImagingReagent Kits, DiagnosticReproducibility of ResultsMolecular Diagnostic TechniquesPredictive Value of TestsROC CurveDiagnostic and Statistical Manual of Mental DisordersDiagnostic ServicesTomography, X-Ray ComputedRetrospective StudiesDiagnosisClinical Laboratory TechniquesProspective StudiesBiopsyBiological MarkersFalse Positive ReactionsMagnetic Resonance ImagingDiagnosis, Computer-AssistedFalse Negative ReactionsBiopsy, NeedleTumor Markers, BiologicalObserver VariationEnzyme-Linked Immunosorbent AssayParasitologyPrognosisImmunoassayAlgorithmsTime FactorsEarly DiagnosisMicroscopyUltrasonographyEvaluation Studies as TopicSerologic TestsContrast MediaDiagnostic Techniques, Obstetrical and GynecologicalSeverity of Illness IndexDiagnostic Techniques, Digestive SystemBiopsy, Fine-NeedlePrevalencePhysical ExaminationRadiography