Biological TherapyBiological ProductsAntibodies, MonoclonalAntirheumatic AgentsArthritis, RheumatoidAntibodies, Monoclonal, HumanizedPsoriasisPhenetidineArthritis, PsoriaticImmunologic FactorsDermatologic AgentsSpondylarthritisAntibodies, Monoclonal, Murine-DerivedReceptors, Tumor Necrosis FactorRheumatic DiseasesTumor Necrosis Factor-alphaImmunoglobulin GOff-Label UseSchizophrenia, CatatonicTreatment OutcomeAnti-Inflammatory AgentsGastrointestinal AgentsCrohn DiseaseInflammatory Bowel DiseasesImmunotherapyImmunosuppressive AgentsImmunoconjugatesClinical Trials as TopicAutoimmune DiseasesAntibody SpecificityEpitopesNeoplasmsArthritis, JuvenileSeverity of Illness IndexMethotrexateSpondylitis, AnkylosingInterleukin 1 Receptor Antagonist ProteinHybridomasDisease Progression