Embryo ResearchBeginning of Human LifeFertilization in VitroFertilizationReproductive Techniques, AssistedInfertilityFertilitySperm-Ovum InteractionsSpermatozoaInfertility, FemaleMultiple Birth OffspringOocytesPregnancyEmbryo, MammalianMedical TourismPregnancy RatePregnancy OutcomeEmbryo TransferCryopreservationEmbryo ImplantationBlastocystInfertility, MaleSperm Injections, IntracytoplasmicClomipheneOvulation InductionEmbryonic DevelopmentBlastomeresDenmarkSperm CountPregnancy, MultipleEmbryo, NonmammalianEmbryonic and Fetal DevelopmentZygoteResearchMaternal AgeOvumPersonhoodChick EmbryoZona PellucidaEmbryo Culture TechniquesEmbryo DispositionFertility PreservationSperm MotilityPregnancy ComplicationsCleavage Stage, Ovum