Birth RateLive BirthPregnancyBirth WeightPremature BirthPregnancy in AdolescencePregnancy RatePregnancy OutcomeInfant, NewbornEmbryo TransferFertilization in VitroInfant, Low Birth WeightIllegitimacyMultiple Birth OffspringReproductive Techniques, AssistedMaternal AgePregnancy, MultipleBirth CertificatesOvulation InductionOocyte RetrievalSperm Injections, IntracytoplasmicVital StatisticsInfertility, FemaleEmbryo ImplantationGestational AgeInfertilityCryopreservationReproductive Control AgentsInfant MortalityAbortion, SpontaneousFollicle Stimulating Hormone, HumanCesarean SectionPregnancy ComplicationsGamete Intrafallopian TransferSingle Embryo TransferBirth OrderClomipheneDelivery, ObstetricAbortion, HabitualFertility Agents, FemaleAbortion, LegalPrenatal CareInsemination, Artificial, HomologousFertilityEmbryo Culture TechniquesNational Center for Health Statistics (U.S.)United StatesSingle ParentTwinsPaternal AgeRetrospective StudiesCleavage Stage, OvumNafarelinSex RatioInfant, PrematureFetal DeathCohort StudiesFetal MortalityMinorsParental NotificationAbortion, InducedOocyte DonationParityStillbirthParturitionMarital StatusPreimplantation DiagnosisObstetric Labor, PrematureMenotropinsBirth IntervalsBirth InjuriesInsemination, ArtificialBlastocystLabor, InducedAnovulationDemographyFamily Planning PolicySperm RetrievalFallopian Tube DiseasesImmunity, HerdCongenital AbnormalitiesHispanic AmericansRisk FactorsReproductive TechniquesShaken Baby SyndromeInfant CareAge FactorsProspective StudiesInfant, Small for Gestational AgeAzoospermiaTreatment OutcomeFamily Planning ServicesTime FactorsSeasonsInfant, Premature, DiseasesOvarian Hyperstimulation SyndromeSocioeconomic FactorsBreast FeedingChorionic GonadotropinMothers