Rheumatic DiseasesArthritis, RheumatoidAutoimmune DiseasesSjogren's SyndromeLupus Erythematosus, SystemicScleroderma, SystemicRheumatic FeverArthritis, ReactiveAntibodies, AntinuclearRheumatic Heart DiseasePeriostitisArthritisAutoantibodiesSpondylitis, AnkylosingOsteoarthritisArthritis, ExperimentalArthritis, InfectiousAntirheumatic AgentsSynovial MembraneArthritis, JuvenileRheumatoid FactorSynovial FluidArthritis, PsoriaticJointsSynovitisMethotrexateSeverity of Illness IndexRheumatologyBlood SedimentationBipolar DisorderMetacarpophalangeal JointSulfasalazineRheumatoid NoduleImmunoglobulin GGold Sodium ThiomalateTumor Necrosis Factor-alphaPeptides, CyclicArthrographyTreatment OutcomeHLA-DRB1 ChainsMental Disorders