title: Classification of vasculitis.
authors.forename: J C
authors.initials: JC
authors.lastname: Piette
authors.forename: C
authors.initials: C
authors.lastname: Fieschi
authors.forename: Z
authors.initials: Z
authors.lastname: Amoura
mesh_terms: D003937:Diagnosis, Differential; D014890:Granulomatosis with Polyangiitis / Q000145:classification / Q000175:diagnosis; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000145:classification* / Q000175:diagnosis