AspirinPlatelet Aggregation InhibitorsProtein PrecursorsAnti-Inflammatory Agents, Non-SteroidalTiclopidineThromboxane B2Cyclooxygenase InhibitorsPlatelet AggregationSalicylatesPlatelet Function TestsAmyloid beta-Protein PrecursorDrug Therapy, CombinationBlood PlateletsSodium SalicylateFibrinolytic AgentsEnzyme PrecursorsHemorrhageAsthma, Aspirin-InducedAnticoagulantsWarfarinTablets, Enteric-CoatedCyclooxygenase 1RNA PrecursorsDose-Response Relationship, DrugProstaglandin-Endoperoxide SynthasesBleeding TimeGastrointestinal HemorrhagePlatelet ActivationThromboxanesIbuprofenThromboxane A2ThrombosisTime FactorsCyclooxygenase 2 InhibitorsDouble-Blind MethodDipyridamoleMolecular Sequence DataLipoxinsAcetaminophenDrug ResistanceRisk FactorsIndomethacinNucleic Acid PrecursorsMyocardial InfarctionGastric MucosaSulfinpyrazoneCyclooxygenase 2Amino Acid SequenceTreatment OutcomeStrokeProstaglandinsAmyloid Precursor Protein SecretasesReye SyndromeStomach UlcerProspective StudiesNaproxen