Birth RateLive BirthPregnancyBirth WeightPremature BirthPregnancy in AdolescencePregnancy RatePregnancy OutcomeEmbryo TransferFertilization in VitroIllegitimacyInfant, Low Birth WeightInfant, NewbornMultiple Birth OffspringReproductive Techniques, AssistedMaternal AgePregnancy, MultipleBirth CertificatesOvulation InductionOocyte RetrievalSperm Injections, IntracytoplasmicVital StatisticsInfertility, FemaleEmbryo ImplantationInfertilityCryopreservationReproductive Control AgentsFollicle Stimulating Hormone, HumanAbortion, SpontaneousGamete Intrafallopian TransferSingle Embryo TransferGestational AgeClomipheneBirth OrderCesarean SectionInfant MortalityFertility Agents, FemaleAbortion, HabitualAbortion, LegalPregnancy ComplicationsInsemination, Artificial, HomologousFertilityDelivery, ObstetricNational Center for Health Statistics (U.S.)Embryo Culture TechniquesUnited StatesSingle ParentPaternal AgePrenatal CareTwinsCleavage Stage, OvumNafarelinSex RatioFetal MortalityRetrospective StudiesMinorsParental NotificationCohort StudiesAbortion, InducedOocyte DonationFetal DeathMenotropinsMarital StatusBirth IntervalsInsemination, ArtificialBlastocystStillbirthParturitionAnovulationPreimplantation DiagnosisParityObstetric Labor, PrematureFamily Planning PolicyDemographySperm RetrievalFallopian Tube DiseasesImmunity, HerdLabor, InducedHispanic AmericansBirth InjuriesReproductive TechniquesRisk FactorsAzoospermiaAge FactorsCongenital AbnormalitiesFamily Planning ServicesOvarian Hyperstimulation SyndromeInfant, PrematureTreatment OutcomeProspective StudiesSeasonsChorionic GonadotropinGonadotropinsBuserelinFertilizationFollicle Stimulating HormoneWisconsinAfrican AmericansEuropean Continental Ancestry GroupReproduction