Antibodies, Antineutrophil CytoplasmicWegener GranulomatosisMyeloblastinVasculitisAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisPeroxidaseChurg-Strauss SyndromeVasculitis, Leukocytoclastic, CutaneousPropylthiouracilMicroscopic PolyangiitisFluorescent Antibody Technique, IndirectAntithyroid AgentsPolyarteritis NodosaGlomerulonephritisSerine EndopeptidasesAutoantibodiesEndocarditis, Subacute BacterialAntibodiesEnzyme-Linked Immunosorbent AssayColitis, UlcerativeAntibody SpecificityNeutrophilsNose DiseasesEosinophilia-Myalgia SyndromeHemoptysisImmunosuppressive AgentsAntibodies, AntinuclearProctocolectomy, RestorativeFixativesBiological MarkersMethimazoleAutoantigensPrednisoloneCyclophosphamideGraves DiseaseAntibodies, MonoclonalMethylprednisoloneFluorescent Antibody TechniqueLung DiseasesAutoimmune DiseasesImmunoglobulin GRespiratory BurstAntibodies, Monoclonal, Murine-DerivedAntibodies, ViralFormaldehydeSensitivity and SpecificityRecurrenceAntibodies, BacterialCrohn DiseaseBiopsyCathepsin GRemission InductionAntibodies, FungalFollow-Up StudiesAntibody FormationAntibodies, NeutralizingLysosomal-Associated Membrane Protein 2Neutrophil ActivationKidneyPredictive Value of TestsLactoferrinDrug Therapy, CombinationPlasma ExchangeLeukocyte ElastaseSkin Diseases, VascularPurpura, Schoenlein-HenochTreatment Outcome