Arthritis, RheumatoidAntirheumatic AgentsArthritisChronic DiseaseArthritis, InfectiousSynovial MembraneArthritis, JuvenileSynovial FluidRheumatoid FactorArthritis, PsoriaticJointsArthritis, ReactiveSynovitisOsteoarthritisMethotrexateBlood SedimentationSeverity of Illness IndexSulfasalazineRheumatoid NoduleMetacarpophalangeal JointAutoantibodiesGold Sodium ThiomalateArthrographyRheumatologyPeptides, CyclicTumor Necrosis Factor-alphaRheumatic DiseasesHLA-DRB1 ChainsWrist JointMice, Inbred DBAImmunoglobulin GFinger JointHLA-DR4 AntigenHLA-DR AntigensAntibodies, MonoclonalCollagen Type IICitrullineTreatment OutcomeSpondylitis, AnkylosingReceptors, Tumor Necrosis Factor