Antibodies, AntiphospholipidAntiphospholipid SyndromeAntibodies, AnticardiolipinLupus Coagulation Inhibitorbeta 2-Glycoprotein ICardiolipinsLupus Erythematosus, SystemicThrombosisAntibodiesAbortion, HabitualThrombophiliaSneddon SyndromeImmunoglobulin GAntibody SpecificityAutoantibodiesCatastrophic IllnessAntibodies, MonoclonalGlycoproteinsHydroxychloroquinePartial Thromboplastin TimeImmunoglobulin MPregnancy ComplicationsAnticoagulantsSkin Diseases, VascularPregnancy Complications, HematologicPregnancyLupus Vasculitis, Central Nervous SystemAntibodies, ViralPhospholipidsPanniculitis, Lupus ErythematosusAbortion, SpontaneousAntibodies, BacterialProthrombinWarfarinAnetodermaVenous ThrombosisAntibodies, AntinuclearBinding Sites, AntibodyPulmonary EmbolismActivated Protein C ResistanceBlood Coagulation FactorsAnnexin A5Enzyme-Linked Immunosorbent AssayAspirinAntibody FormationAntibodies, NeutralizingThromboembolismThromboplastinGangreneAutoimmune DiseasesFetal DeathFactor VMyelitis, TransversePhosphatidylserinesEclampsiaAntibody AffinityEpitopesTrophoblastsThrombin TimeHeparin, Low-Molecular-WeightThrombocytopeniaPregnancy OutcomeBlood CoagulationRisk FactorsEndocarditisThrombophlebitisHeparinProtein CHLA-DR2 AntigenFluorescent Antibody TechniquePlacental InsufficiencyHeart Valve DiseasesVenous ThromboembolismBiological MarkersAntibodies, Anti-IdiotypicProspective StudiesInternational Normalized RatioImmunoglobulin AVasculitisEmbryo ImplantationPrednisoloneCerebrovascular DisordersProtein S DeficiencyCross ReactionsBlood Coagulation TestsRetinal Artery OcclusionHIV AntibodiesHLA-DR3 AntigenBlood Coagulation DisordersRetrospective StudiesImmunoglobulinsAntibodies, NeoplasmAntibodies, Protozoan