DermatomyositisPolymyositisAutoimmune DiseasesMyositisParaneoplastic SyndromesLung Diseases, InterstitialAutoantibodiesMediastinal EmphysemaLupus Erythematosus, SystemicAutoantigensAutoimmunityRheumatic DiseasesPanniculitisMuscle WeaknessImmunosuppressive AgentsHistidine-tRNA LigaseLupus Erythematosus, CutaneousPrednisoloneImmunoglobulins, IntravenousAntibodies, AntinuclearMuscle, SkeletalScleroderma, SystemicConnective Tissue DiseasesMyositis, Inclusion BodySjogren's SyndromeSkinBiopsyEncephalomyelitis, Autoimmune, ExperimentalMicroscopic AngioscopyTelangiectasis