AspirinPlatelet Aggregation InhibitorsAnti-Inflammatory Agents, Non-SteroidalTiclopidineThromboxane B2Cyclooxygenase InhibitorsPlatelet AggregationSalicylatesPlatelet Function TestsDrug Therapy, CombinationDose-Response Relationship, DrugBlood PlateletsSodium SalicylateFibrinolytic AgentsDouble-Blind MethodHemorrhageAsthma, Aspirin-InducedAnticoagulantsWarfarinTablets, Enteric-CoatedCyclooxygenase 1Bleeding TimeGastrointestinal HemorrhageProstaglandin-Endoperoxide SynthasesTime FactorsPlatelet ActivationThromboxanesIbuprofenThromboxane A2Drug Administration ScheduleThrombosisCyclooxygenase 2 InhibitorsAdministration, OralDipyridamoleTreatment OutcomeLipoxinsAcetaminophenDrug ResistanceChromatography, High Pressure LiquidIndomethacinRisk FactorsMyocardial InfarctionCross-Over StudiesPremedicationSulfinpyrazoneGastric MucosaCyclooxygenase 2Reye SyndromeStrokeStomach UlcerProspective StudiesProstaglandinsHalf-LifeElectrophoresis, Polyacrylamide GelNaproxenRecombinant Proteins