VasculitisSystemic VasculitisAntibodies, Antineutrophil CytoplasmicWegener GranulomatosisPolyarteritis NodosaMyeloblastinAnti-Neutrophil Cytoplasmic Antibody-Associated VasculitisChurg-Strauss SyndromeRetinal VasculitisVasculitis, Leukocytoclastic, CutaneousMicroscopic PolyangiitisAntibodiesPeroxidasePurpura, Schoenlein-HenochArteritisMucocutaneous Lymph Node SyndromeAutoantibodiesAntibody SpecificityGlomerulonephritisSerine EndopeptidasesCogan SyndromeAntibodies, MonoclonalNeutrophilsFluorescent Antibody Technique, IndirectCryoglobulinemiaVasculitis, Central Nervous SystemAutoimmune DiseasesImmunosuppressive AgentsAntibodies, ViralAutoantigensEnzyme-Linked Immunosorbent AssayPrednisoloneAntibodies, BacterialPropylthiouracilBehcet SyndromeImmunoglobulins, IntravenousImmunoglobulin GOtorhinolaryngologic DiseasesCyclophosphamideMethylprednisoloneAntithyroid AgentsAntibody FormationAntibodies, NeutralizingFluorescent Antibody TechniqueRespiratory BurstGiant Cell ArteritisAntibodies, AntinuclearLupus Erythematosus, SystemicCollagen DiseasesSkin Diseases, VascularBiological MarkersAntibody AffinityLeukemia, Myelomonocytic, ChronicRheumatoid VasculitisAntibodies, Anti-IdiotypicGlucocorticoidsAntibodies, Monoclonal, Murine-DerivedRetrospective StudiesKidney DiseasesTreatment OutcomeAntibodies, FungalBinding Sites, AntibodyEndocarditis, Subacute BacterialColitis, UlcerativeKidneyNeutrophil ActivationDrug Therapy, CombinationLysosomal-Associated Membrane Protein 2EpitopesHIV AntibodiesCytoplasmPlasma ExchangeFollow-Up StudiesTumor Necrosis Factor-alphaAntibodies, NeoplasmAntibodies, ProtozoanArthritis, RheumatoidScleritisBiopsyMethimazoleImmunoglobulin MNose DiseasesLung DiseasesAntigen-Antibody ComplexSeverity of Illness IndexImmune SeraGraves DiseaseCase-Control StudiesCross ReactionsRecurrenceHemoptysisCathepsin GFixativesSensitivity and SpecificityRemission InductionEndothelium, VascularEosinophilia-Myalgia SyndromePrognosisDrug ContaminationT-Lymphocytes