AneuploidyPrenatal DiagnosisChromosomes, Human, XIn Situ Hybridization, FluorescencePregnancySex Chromosome DisordersChromosomes, Human, Pair 18TrisomyChromosome DisordersChromosomes, Human, Pair 21Chorionic Villi SamplingChromosomes, Human, Pair 13Polar BodiesPreimplantation DiagnosisKaryotypingAmniocentesisChromosomes, Human, YSex Chromosome AberrationsChromosome AberrationsKlinefelter SyndromeChromosomes, HumanSensitivity and SpecificityDown SyndromeDiploidyMosaicismLymphangioma, CysticFetal DiseasesAmniotic FluidPolymerase Chain ReactionGene DosageXYY KaryotypeComparative Genomic HybridizationPregnancy Trimester, FirstMaternal AgeTurner SyndromeLimit of DetectionSpermatozoaY ChromosomePregnancy-Associated Plasma Protein-AInfertility, MaleChorionic Gonadotropin, beta Subunit, HumanFetusChorionic VilliNuchal Translucency MeasurementSex ChromosomesGenetic TestingDNA ProbesFalse Positive ReactionsReproducibility of ResultsMeiosisCytogenetic AnalysisUltrasonography, PrenatalX ChromosomeFertilization in VitroAbortion, Spontaneous