Product Surveillance, PostmarketingAdverse Drug Reaction Reporting SystemsUnited States Food and Drug AdministrationDrug ApprovalDrug-Related Side Effects and Adverse ReactionsClinical Trials, Phase IV as TopicPopulation SurveillanceConsumer Product SafetyIntussusceptionDrug IndustryUnited StatesSafetySentinel SurveillanceVaccines, AttenuatedObservational Study as TopicObservationTreatment OutcomeJapanDrug MonitoringAntirheumatic AgentsClinical Trials as TopicProspective Studies