AspirinPlatelet Aggregation InhibitorsThromboxane B2Platelet AggregationTiclopidineAnti-Inflammatory Agents, Non-SteroidalBlood PlateletsDrug Therapy, CombinationDouble-Blind MethodDose-Response Relationship, DrugCyclooxygenase InhibitorsSalicylatesPlatelet Function TestsSodium SalicylateFibrinolytic AgentsHemorrhageAsthma, Aspirin-Induced