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 TransferGestational AgeSingle Embryo TransferClomipheneBirth OrderInfant MortalityCesarean SectionFertility Agents, FemaleAbortion, HabitualAbortion, LegalPregnancy ComplicationsInsemination, Artificial, HomologousFertilityDelivery, ObstetricNational Center for Health Statistics (U.S.)Embryo Culture TechniquesUnited StatesSingle ParentPrenatal CarePaternal AgeTwinsCleavage Stage, OvumNafarelinRetrospective StudiesSex RatioFetal MortalityMinorsCohort StudiesParental NotificationAbortion, InducedFetal DeathOocyte DonationMarital StatusMenotropinsBirth IntervalsInsemination, ArtificialBlastocystStillbirthParturitionAnovulationPreimplantation DiagnosisParityDemographyObstetric Labor, PrematureFamily Planning PolicySperm RetrievalFallopian Tube DiseasesImmunity, HerdHispanic AmericansLabor, InducedRisk FactorsBirth InjuriesReproductive TechniquesAge FactorsAzoospermiaCongenital AbnormalitiesProspective StudiesTreatment OutcomeFamily Planning ServicesSeasonsOvarian Hyperstimulation SyndromeInfant, PrematureTime FactorsPetroleumChorionic GonadotropinGonadotropinsBuserelinSocioeconomic FactorsFollicle Stimulating HormoneIncidenceEuropean Continental Ancestry Group