AspirinPlatelet Aggregation InhibitorsAnti-Inflammatory Agents, Non-SteroidalTiclopidineThromboxane B2Drug Administration ScheduleRadiation DosageLethal Dose 50Cyclooxygenase InhibitorsAdministration, OralDrug Therapy, CombinationPlatelet AggregationDouble-Blind MethodTime FactorsSalicylatesTreatment OutcomePlatelet Function TestsRadiometryBlood PlateletsDrug InteractionsSodium SalicylateWarfarinAnticoagulantsDose-Response Relationship, RadiationDose FractionationHemorrhageRadiotherapy DosageInjections, IntravenousFibrinolytic AgentsProspective StudiesTablets, Enteric-CoatedIbuprofenAsthma, Aspirin-InducedBleeding TimeCyclooxygenase 1Infusions, IntravenousAcetaminophenArea Under CurveProstaglandin-Endoperoxide SynthasesGastrointestinal HemorrhagePlatelet ActivationThromboxanesDrug ResistanceHalf-LifeRadiotherapy Planning, Computer-AssistedCyclooxygenase 2 InhibitorsThrombosisRisk FactorsThromboxane A2Follow-Up StudiesDipyridamoleRats, Sprague-DawleyDose-Response Relationship, DrugGastric MucosaDrug CombinationsMyocardial InfarctionBody BurdenThermoluminescent DosimetryStomach UlcerNeoplasmsRats, WistarLipoxinsProstaglandinsCyclooxygenase 2Antineoplastic AgentsDrug EvaluationDrug SynergismSulfinpyrazoneRecurrenceInjections, SubcutaneousNaproxenRelative Biological EffectivenessStrokeDisease Models, AnimalRandom AllocationPlacebosBiological AvailabilityDrug HypersensitivityMetabolic Clearance RateIndomethacinDinoprostoneDogsHeparinRisk AssessmentMetered Dose InhalersRandomized Controlled Trials as TopicRadiation MonitoringRetrospective StudiesReye SyndromeEpoprostenolRadiation InjuriesClinical Trials as TopicLiverSalicylic AcidPyrazolesPrimary PreventionAntineoplastic Combined Chemotherapy Protocols