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 ProteinsSkinCREST SyndromeDermatomyositisConnective Tissue CellsHypertension, PulmonaryRheumatic DiseasesBreast ImplantsMyositisArthritis, RheumatoidRibonucleoprotein, U1 Small NuclearAutoantigensPolymyositisScleroderma, LocalizedPolyarteritis NodosaAutoimmune DiseasesMucinosesRibonucleoproteins, Small NuclearRibonucleoproteinsVasculitisSkin DiseasesNailsSiliconesIdiopathic Interstitial PneumoniasMarfan SyndromePrednisolonePulmonary FibrosisMicroscopic AngioscopyToesSurgery, PlasticWegener GranulomatosisArthritisRNA, Small CytoplasmicEnzyme-Linked Immunosorbent AssayHydroxychloroquinePericardial EffusionRheumatoid NoduleCranial Nerve DiseasesRheumatoid FactorCounterimmunoelectrophoresisImmunoglobulin GMicroscopic PolyangiitisFluorescent Antibody TechniqueSkin AgingFingersCryptogenic Organizing PneumoniaEsophageal Motility DisordersFatal OutcomeScleritisHLA-DR4 AntigenNucleoproteinsFibroblastsAntibody SpecificityAntigens, NuclearBiological MarkersSkin NeoplasmsCollagenRespiratory Function TestsImmediate-Early ProteinsBehcet SyndromeImmunosuppressive AgentsCardiac TamponadeIntercellular Signaling Peptides and ProteinsImmunoblottingRetrospective StudiesMethylprednisolone