Abortion, HabitualAbortion, SpontaneousPregnancyPregnancy OutcomeAbortion, ThreatenedHistocompatibility, Maternal-FetalPregnancy Trimester, FirstLive BirthAntiphospholipid SyndromeAntibodies, AntiphospholipidPregnancy ComplicationsReproductive Control AgentsUterine Cervical IncompetenceTriploidyEndometriumInfertility, FemaleBirth RateTrophoblastsAbortion, IncompleteActivated Protein C ResistanceKaryotypingPreimplantation DiagnosisEmbryo ImplantationMaternal AgeH-Y AntigenUterine DiseasesChromosome AberrationsDeciduaAntibodies, AnticardiolipinEarly Termination of Clinical TrialsUterusHLA-G AntigensCase-Control StudiesChorionic Gonadotropin, beta Subunit, HumanAbortion, MissedThrombophiliaAneuploidyCzech RepublicGestational AgeImmunoglobulins, IntravenousGenetic TestingAntigens, CD56CollectinsKiller Cells, NaturalDilatation and CurettageGestational SacFactor VGene FrequencyAspirinHaplotypesAllelesPlacentaReceptors, KIRRisk FactorsChorionic GonadotropinThrombosisHomozygoteDenmarkOdds RatioGenotypeHLA AntigensTranslocation, GeneticRetrospective StudiesGenetic Predisposition to DiseaseProgesteroneReceptors, Interleukin-8Abortion, InducedInfant, NewbornChorionic VilliPregnancy RateCrown-Rump LengthHeparinStillbirthUterine HemorrhageIncidenceFetal DeathPolymorphism, Genetic