Connective Tissue DiseasesMixed Connective Tissue DiseaseConnective TissueScleroderma, SystemicAntibodies, AntinuclearRaynaud DiseaseCollagen DiseasesLupus Erythematosus, SystemicConnective Tissue Growth FactorAutoantibodiesSkin and Connective Tissue DiseasesSjogren's SyndromeLung Diseases, InterstitialsnRNP Core ProteinsCREST SyndromeDermatomyositisConnective Tissue CellsHypertension, PulmonaryRheumatic DiseasesBreast ImplantsMyositisArthritis, RheumatoidRibonucleoprotein, U1 Small NuclearAutoantigensPolymyositisPolyarteritis NodosaScleroderma, LocalizedAutoimmune DiseasesMucinosesRibonucleoproteins, Small NuclearRibonucleoproteinsVasculitisNailsSiliconesIdiopathic Interstitial PneumoniasMarfan SyndromePrednisolonePulmonary FibrosisMicroscopic AngioscopyToesSurgery, PlasticWegener GranulomatosisArthritisRNA, Small CytoplasmicEnzyme-Linked Immunosorbent AssayHydroxychloroquineRheumatoid NodulePericardial EffusionCranial Nerve DiseasesRheumatoid FactorCounterimmunoelectrophoresisMicroscopic PolyangiitisImmunoglobulin GFluorescent Antibody TechniqueCryptogenic Organizing PneumoniaEsophageal Motility DisordersFingersScleritisFatal OutcomeHLA-DR4 AntigenNucleoproteinsAntibody SpecificityAntigens, NuclearBiological MarkersSkinFibroblastsRespiratory Function TestsImmediate-Early ProteinsCollagenSkin DiseasesBehcet SyndromeCardiac TamponadeImmunosuppressive AgentsIntercellular Signaling Peptides and ProteinsImmunoblottingMethylprednisoloneRetrospective Studies