Breakthrough PainAdministration, BuccalAnalgesics, OpioidFentanylPainLabor PainPain MeasurementAnalgesicsPain ManagementAnalgesia, EpiduralChronic PainPain, PostoperativeDouble-Blind MethodPain, IntractablePrescription Drug MisuseNeoplasmsChronic DiseaseTreatment OutcomeArthralgiaMedication ErrorsMedication AdherencePalliative CareNeuralgiaProspective StudiesQuestionnairesPain ThresholdAnti-Inflammatory Agents, Non-SteroidalTime FactorsRetrospective StudiesRadionuclide GeneratorsLow Back PainSeverity of Illness IndexBack PainPatient SatisfactionQuality of LifeFollow-Up StudiesAbdominal PainAnesthetics, IntravenousNeck PainMedication SystemsComorbidityMedication ReconciliationMedication Systems, HospitalCohort StudiesPelvic PainMorphineFacial PainPain PerceptionPreanesthetic MedicationGene DosageBupivacaine