AnalgesicsAspirinPlatelet Aggregation InhibitorsAnti-Inflammatory Agents, Non-SteroidalTiclopidineThromboxane B2Cyclooxygenase InhibitorsPlatelet AggregationSalicylatesDrug Therapy, CombinationPlatelet Function TestsDouble-Blind MethodDrug Administration ScheduleBlood PlateletsTime FactorsSodium SalicylateTreatment OutcomeAdministration, OralAnticoagulantsHemorrhageWarfarinFibrinolytic AgentsAsthma, Aspirin-InducedTablets, Enteric-CoatedRadiation Dosage