Breakthrough PainAdministration, BuccalFentanylPainPain MeasurementAnalgesics, OpioidLabor PainPain ManagementAnalgesia, EpiduralPain, PostoperativeDouble-Blind MethodNeoplasmsAnalgesicsKinesicsChronic DiseasePain ThresholdChild, HospitalizedChronic PainNursing AssessmentGeriatric PsychiatryAnalgesiaInfant BehaviorPsychomotor AgitationFacial ExpressionReproducibility of ResultsRadionuclide GeneratorsLow Back PainBack PainTreatment OutcomePain, IntractableDocumentationPediatricsBehaviorAbdominal PainNeck PainQuestionnairesProspective StudiesNursesPatient SimulationTime FactorsTotal Quality ManagementHospital UnitsPelvic PainSeverity of Illness IndexPain PerceptionHospitals, PediatricObserver VariationPractice Guidelines as TopicFacial Pain