AspirinAnalgesicsKiller Cells, NaturalPainPlatelet Aggregation InhibitorsAnti-Inflammatory Agents, Non-SteroidalChronic PainPain ManagementKiller Factors, YeastPain ThresholdPain, PostoperativeWhale, KillerLow Back PainBack PainTiclopidinePain MeasurementThromboxane B2Abdominal PainNeck PainCyclooxygenase InhibitorsPain, IntractableKiller Cells, Lymphokine-ActivatedPlatelet AggregationSalicylatesPelvic PainPain PerceptionPlatelet Function TestsNatural Killer T-CellsFacial PainAcute PainPain, ReferredDrug Therapy, CombinationCytotoxicity, ImmunologicBlood PlateletsSodium SalicylateShoulder PainFibrinolytic AgentsTreatment OutcomeReceptors, Natural Killer CellDouble-Blind MethodMusculoskeletal PainDose-Response Relationship, DrugHemorrhageTime FactorsAsthma, Aspirin-InducedAnticoagulantsWarfarinTablets, Enteric-CoatedCyclooxygenase 1IbuprofenProspective StudiesGastrointestinal HemorrhageProstaglandin-Endoperoxide SynthasesReceptors, KIRBleeding TimePlatelet ActivationThromboxanesRisk FactorsAcetaminophenThromboxane A2Antigens, CD56Cyclooxygenase 2 InhibitorsThrombosisDipyridamoleCytokine-Induced Killer CellsIndomethacinFollow-Up StudiesDrug ResistanceLipoxinsMyocardial InfarctionNociceptive PainNeuralgiaChronic DiseaseInterleukin-2MycotoxinsGastric MucosaCyclooxygenase 2NaproxenSulfinpyrazoneStrokeStomach UlcerReye SyndromeReceptors, ImmunologicProstaglandinsDinoprostoneFlow CytometryAnalgesics, Opioid