AspirinAnti-Inflammatory Agents, Non-SteroidalPlatelet Aggregation InhibitorsCyclooxygenase InhibitorsCyclooxygenase 2 InhibitorsIbuprofenNaproxenThromboxane B2TiclopidineDiclofenacSalicylatesProstaglandin-Endoperoxide SynthasesCyclooxygenase 1Platelet AggregationAcetaminophenCyclooxygenase 2Platelet Function TestsDrug Therapy, CombinationGastrointestinal HemorrhageIndomethacinGastrointestinal DiseasesSodium SalicylateBlood PlateletsStomach UlcerSulfonamidesPyrazolesAsthma, Aspirin-InducedKetoprofenEtodolacFibrinolytic AgentsSulindacPiroxicamTablets, Enteric-CoatedGastric MucosaAnticoagulantsRisk FactorsSulfonesDose-Response Relationship, DrugWarfarinHemorrhageLactonesAnalgesics, Non-NarcoticPeptic UlcerDouble-Blind MethodDinoprostonePeptic Ulcer HemorrhageProstaglandinsBleeding TimePlatelet ActivationThromboxanesDrug InteractionsThiazinesNitrobenzenesDrug HypersensitivityThrombosisTreatment OutcomeThromboxane A2Prospective StudiesDipyridamoleMyocardial InfarctionLipoxinsTime FactorsIsoenzymesSalicylic AcidDrug ResistanceRandomized Controlled Trials as TopicChemopreventionSulfinpyrazoneStrokeReye SyndromeAnticarcinogenic AgentsCardiovascular DiseasesOsteoarthritisEpoprostenolAnti-Ulcer AgentsRisk Assessment