Abortion, HabitualPregnancyAntibodies, AntiphospholipidChromosome AberrationsPregnancy MaintenancePregnancy OutcomeChromosome DisordersPregnancy ComplicationsAbortion, SpontaneousPregnancy Trimester, FirstKaryotypingVascular Endothelial Growth Factor, Endocrine-Gland-DerivedCoagulation Protein DisordersAntiphospholipid SyndromeEmbryo ImplantationUltrasonography, Doppler, PulsedCase-Control StudiesThrombophiliaDeciduaTrisomybeta 2-Glycoprotein IAneuploidyPregnancy, AnimalAntibodies, AnticardiolipinIn Situ Hybridization, FluorescenceSex Chromosome AberrationsEndometriumCytogenetic AnalysisUterusPregnancy, EctopicPregnancy Trimester, SecondTranslocation, GeneticUltrasonography, PrenatalAbnormal KaryotypeChromosomes, Human, Pair 13AzoospermiaPregnancy, High-RiskGenetic Association StudiesDown SyndromeCytogeneticsPrenatal DiagnosisFetal DiseasesPregnancy Trimester, ThirdPregnancy RateMosaicismSex Chromosome Disorders of Sex DevelopmentGestational AgeChromosome BandingChromosomes, Human, Pair 18AmniocentesisPolymorphism, GeneticPregnancy Complications, CardiovascularAbnormalities, MultiplePregnancy TrimestersKaryotypePregnancy TestsChromosome DeletionInfertility, MaleRisk FactorsPregnancy, MultiplePregnancy in DiabeticsInfant, NewbornPregnancy, TubalChromosomes, Human, YOligospermiaMaternal AgePreimplantation DiagnosisCongenital AbnormalitiesChromosomes, Human, Pair 8TriploidyPregnancy Complications, NeoplasticMonosomySpectral KaryotypingChromosomes, Human, XPregnancy in AdolescenceFertilization in VitroChromosomes, Human, Pair 14Chromosomes, Human, Pair 11Pregnancy Complications, InfectiousFetal DeathAnemia, RefractoryXYY KaryotypeSperm Injections, IntracytoplasmicFetusChromosomes, Human, Pair 21Nuchal Translucency MeasurementNeckAbortion, EugenicChromosomes, HumanPregnancy ProteinsChromosomes, Human, Pair 1Chromosomes, Human, Pair 7Chromosomes, Human, Pair 12Pregnancy, UnplannedFetal HeartMyelodysplastic SyndromesCrown-Rump LengthChromosomes, Human, 6-12 and XPregnancy, UnwantedChromosomes, Human, Pair 17