AspirinPlatelet Aggregation InhibitorsAnti-Inflammatory Agents, Non-SteroidalSalicylatesCyclooxygenase InhibitorsPlatelet AggregationProstanoic AcidsThromboxane B2TiclopidineThromboxanesBlood PlateletsSodium SalicylatePlatelet Function TestsDipyroneFibrinolytic AgentsSalicylic AcidAcetaminophenProstaglandinsThromboxane A2Prostaglandin-Endoperoxide SynthasesAnticoagulantsGastrointestinal HemorrhageCyclooxygenase 1IndomethacinDipyridamoleBleeding TimeDrug HypersensitivityProstaglandins EDose-Response Relationship, DrugPiroxicamThrombosisAntipyreticsDrug Interactions6-Ketoprostaglandin F1 alphaGentisatesEpoprostenolDinoprostoneIbuprofenStomach DiseasesArachidonic AcidGastric MucosaThromboembolismDouble-Blind MethodDrug Therapy, CombinationPhenacetinArachidonic AcidsWarfarinCyclooxygenase 2 InhibitorsTime FactorsCyclooxygenase 2HemorrhageStomach UlcerCerebrovascular DisordersPlatelet AdhesivenessRandom AllocationTreatment OutcomePlatelet ActivationAcetic AcidDiclofenacAnalgesicsAdenosine DiphosphateIschemic Attack, TransientAnti-Inflammatory AgentsGastrointestinal DiseasesDrug ResistancePlacebosPeptic UlcerProspective StudiesNanofibersMyocardial InfarctionPyrazolesAnalgesics, Non-NarcoticRisk FactorsCross-Over StudiesStrokeAbsorbable ImplantsClinical Trials as TopicSulfonamidesHeparinCardiovascular DiseasesRabbitsIndicators and ReagentsFollow-Up StudiesCollagenNitric OxidePainCanadaAsthma, Aspirin-InducedSerotoninThrombinTablets, Enteric-Coated