IbuprofenAspirinAnti-Inflammatory Agents, Non-SteroidalCyclooxygenase InhibitorsAnalgesics, Non-NarcoticPlatelet Aggregation InhibitorsAcetaminophenNaproxenThromboxane B2DiclofenacDouble-Blind MethodSalicylatesAntipyreticsCyclooxygenase 2 InhibitorsDrug Therapy, CombinationTiclopidineAdministration, OralPlatelet AggregationDuctus Arteriosus, PatentIndomethacinDrug Administration ScheduleProstaglandin-Endoperoxide SynthasesCyclooxygenase 1Treatment OutcomeKetoprofenTherapeutic EquivalencySodium SalicylateThromboxanesTime FactorsDrug InteractionsPlatelet Function TestsDose-Response Relationship, DrugBlood PlateletsSulfonesLactones