Treatment OutcomeDrug Therapy, CombinationDose-Response Relationship, DrugDrug-Related Side Effects and Adverse ReactionsDouble-Blind MethodAntipsychotic AgentsAnalgesics, OpioidClinical Trials as TopicAdministration, OralDrug Administration ScheduleTime FactorsNauseaAntineoplastic AgentsVomitingDrug EvaluationPainAdministration, TopicalAnalgesicsProspective StudiesPain, PostoperativeBasal Ganglia DiseasesPain MeasurementNeoplasmsAnti-Inflammatory Agents, Non-SteroidalDelayed-Action PreparationsDrug EruptionsAnticonvulsantsFollow-Up StudiesDrug Delivery Systems